Quick facts

Tuition 2026–27
Middle School (Grades 5–8) $65,800 · Upper School (Grades 9–12) $68,900 a year. Tuition and aidProspective families’ Clarity aid application is due Jan. 15, 2027.
Fall 2027 dates
Application deadline Jan. 15 · decisions in Ravenna Mar. 10. Admissions FAQLater files are considered on a rolling basis if places open.
Test codes
ISEE 220425 · SSAT 7654 Application checklistGrades 6–8 take the ISEE or SSAT; Grades 9–11 take the SSAT. Thayer hosts the SSAT Dec. 12, 2026 and Jan. 9, 2027, and the ISEE Nov. 14 and Dec. 5, 2026.
Parent portal
MySchoolApp (Blackbaud) parent login. MySchoolApp login
School calendar
School-year and event dates. Calendar
Location
745 Washington Street, Braintree, MA 02184

Checked against Thayer Academy’s own pages on October 8, 2026.

School
Coed day · Grades 5–12

No boarding program; Middle and Upper Schools have distinct programs and spaces.

Grade 6 entry
Middle School · ISEE or SSAT

A real application grade, but Thayer does not publish Fall 2027 seats by grade.

Grade 9 entry
Upper School · SSAT

A division transition with placement, study halls, and a required afternoon program.

Fall 2027 timeline
Apply Jan. 15 · decision Mar. 10

The current calendar also lists October open houses and spring 2027 revisit days.

Published tuition
$65,800 MS · $68,900 US

Official 2026–27 prices; Fall 2027 tuition is not yet public.

Financial aid
$11.6M · 38.5% · $40,770 average

School-reported 2024 figures; entirely need-based, with no merit awards.

Current scale
741 students · 13 average class

Live facts page; another school page still shows an older 742-student count.

Transportation
Braintree Red Line · 6 bus routes

2026–27 buses cost $4,600 round-trip and leave at 4 p.m.; activity conflicts need backup.

Homeroom is the academic and relational anchor

Grade 6 is built around the theme “Nature and Civilization.” A homeroom of about 15 travels together for English, social studies, science, arts, world-language sampling, and study skills; its advisor teaches English and social studies.

Mathematics is sectioned differently, creating one early point of movement beyond the home group.

The humanities are intentionally connected: ancient Greek history meets mythology, geography, mask-making, and a sixth-grade Greek play. Science centers on oceanography and marine ecosystems.

Every sixth grader samples Latin for half a year and then shorter French and Spanish courses before choosing a two-year language sequence in Grade 7.

Mathematics covers whole numbers, integers, fractions, decimals, percentages, geometry, rates, ratios, and proportions. Accelerated sections exist.

A student who has already completed work beyond the grade-level accelerated course may take a separate test to be considered for skipping one grade level; the 2026 information required at least 90%, and even that was only consideration, not automatic placement.

Advisors meet students daily, teachers offer daily extra help, and assignments, grading policies, major work, and class expectations appear online for families. That is a deliberately close parent-school partnership, though the school also frames the destination as student independence.

The Middle School afternoon program is required in all three seasons and runs until 3:45 p.m. Students choose an athletics or arts activity each season and must complete at least one athletic activity during the year.

That breadth is a feature, but it also means a sixth grader cannot simply leave after the last academic class.

More choice arrives together with more self-management

The 2026–27 registration page describes a 24-block week. Grade 9 English, history, mathematics, science, and world language each meet three times, occupying 15 blocks.

Common Good I, Health & Wellness, and the Ninth Grade Arts Rotation add three more, leaving six before an elective is added.

Thayer explicitly encourages students to preserve free blocks for studying, meeting teachers, and balancing commitments. It says most ninth graders can reasonably add one elective and possibly two.

That wording matters: the most ambitious-looking schedule is not necessarily the most functional one.

Freshmen have required study halls while learning to manage their new freedom. Teachers publish course expectations, grading policies, and major assignments; the school provides grades and formal comments four times a year and may issue roughly three-week progress reports when a student is struggling.

The official athletics policy requires ninth graders to complete two interscholastic sports seasons; one theater production may replace one sports season. Grade 9 also has full-year introductory health and fitness work during the school day.

Varsity teams are competitive and use tryouts; subvarsity teams are described as developmental with roughly equal playing time over a season.

A new Grade 9 student therefore has several transitions at once: a new social cohort, a new campus rhythm, course placement, free periods, study halls, a demanding afternoon, and a commute home. Ask what orientation, advising, and early academic monitoring look like specifically for students entering from another school.

Advanced options are real; the public rules are incomplete

Thayer’s live facts page advertises 155 Upper School courses, 88 electives, four world languages, 19 AP courses, and 503 AP tests “each year.” It does not say how many unique students take those exams, which grades may enter each AP, what scores they earn, or how often listed courses actually run.

The latest publicly linked Upper School catalog we found is for 2025–26, so it is evidence of structure rather than a Fall 2027 promise. It describes AP, honors, college-preparatory, and fundamentals levels; students may mix levels.

It also says courses can be canceled for insufficient registration and that a sixth core course needs department and dean approval.

In that prior-year catalog, Grade 9 English and history placement considered previous performance, testing, and recommendations; mathematics placement came from the department. The current accepted-student page offers placement testing for continuing French, Latin, Spanish, or Chinese, while beginning Mandarin students enter level I.

The current Grade 9 elective menu includes ensembles, technical theater, media, film and music production, introductory and competition robotics, and a peer-leadership fellowship. Choices are ranked with alternates because schedule fit is not guaranteed.

Several access points, with important boundaries to clarify

Both divisions have a Hale Learning Center. Staff review learning profiles and neuropsychological evaluations, coordinate with families and faculty, offer individual or small-group work in reading, planning, organization, study skills, and assistive technology, and provide alternative testing space.

Sixth graders receive a fall study-skills course once per cycle.

Upper School students can also use a peer-led writing center and student tutoring; Middle School has peer tutoring. The school-issued MacBook program includes managed software, filtering, and repair loaners.

Optional 2026–27 laptop insurance costs $100, while families remain responsible for theft, loss, and potentially full replacement.

The counseling page names two Upper School counselors, one Middle School counselor, and a school psychologist/director of counseling. Services include coping and problem-solving work, relationship and conflict support, crisis intervention, academic-support skills, and liaison with outside providers.

A campus telehealth room allows students to connect with an outside clinician during the day.

Public pages do not disclose counselor caseloads, response times, the typical length or frequency of school counseling, Hale eligibility, whether any support carries an extra fee, or how accommodations are approved and monitored. Nor do they promise daily specialized remediation.

A child with substantial learning or mental-health needs requires a written service map before enrollment.

Nurses are publicly listed on campus from 7:45 a.m. to 3:45 p.m., with shorter Upper School Wednesday coverage. Since teams, rehearsals, travel, and supervised study can extend later, families should ask who holds medical responsibility after the health office closes and at away events.

“Known and valued” is the promise; climate evidence is thinner

Thayer’s public language centers on being known, contributing to the common good, and becoming independent. The live facts page reports that students come from 83 U.S. cities and towns and three foreign countries and that 24% are students of color.

It does not provide grade, gender, socioeconomic, or geographic breakdowns.

The school says it has more than 25 affinity and alliance groups across the two divisions. It also publishes a nondiscrimination statement covering race, religion, gender, gender identity and expression, national origin, family structure, sexual orientation, disability, and other protected categories.

What is missing is just as important: no current public climate survey, participation counts by group, discipline data, retention by subgroup, or outcomes from belonging initiatives. Families should ask for trend data and for examples of how adults respond when inclusion and community norms collide.

The school-selected Class of 2026 profiles show the institutional ideal—students combining academics, leadership, service, arts, and sports. They are useful for seeing what Thayer celebrates, not for estimating how common those experiences are or how a less visible student feels.

Breadth is built into the schedule, but access still has gates

Middle School arts are universal: students rotate through music, studio art, and drama each year, meeting three times in a five-day rotation. Grade 6’s Greek play connects performance to the humanities curriculum.

The school describes arts grading in both divisions as pass/fail and intentionally noncompetitive.

Transit is possible; the 4 p.m. departure is the catch

Thayer is near the Braintree terminus of the MBTA Red Line and the 230 bus. Its current transportation page calls the station a five-minute walk and lists a morning pickup and afternoon drop-off via one school route.

The facts page also advertises shuttle service.

For 2026–27, six school-bus routes serve parts of MetroWest, the South Shore, Boston, and Charlestown. Buses aim to arrive at 7:50 a.m. and depart at 4 p.m. A route needs at least 15 registrations to operate; exam periods can change times; traffic, weather, and equipment can delay or prevent service.

The annual posted price is $4,600 round-trip or $3,500 one-way. The same live page is internally inconsistent on Braintree T service, showing $500 in one fee table and $390 in the MBTA section.

Confirm the actual Fall 2027 product, stop, supervision, and fee before budgeting.

A 4 p.m. bus can work for a Middle School afternoon ending at 3:45, but the margin is small. Thayer plainly says students who miss the bus because of school commitments must arrange their own ride.

Grade 9 sports, games, theater, music, and extra help can therefore turn “bus available” into “family pickup required.”

Middle School families also need to understand the two-campus handoff. Official instructions direct buses to a Middle School drop-off and offer supervised study from 4 to 6 p.m. on Main Campus after the afternoon program.

Ask exactly how a sixth grader moves between sites, who signs them in, and which transport serves the final pickup.

The bullying plan is public; the broader protection system is not

Thayer’s public anti-bullying plan covers school property, school activities, transportation, school technology, off-campus conduct that affects school, cyberbullying, and retaliation. Students and parents may report to a division director or dean or another trusted adult; reports can be anonymous, though discipline generally will not rest only on an anonymous allegation.

The plan calls for prompt investigation, safety restoration, possible counseling, discipline up to dismissal or termination, and law-enforcement notification when appropriate. It gives escalation routes when a division leader or head of school is implicated and says employees receive annual prevention training.

That is meaningful process evidence, not outcome evidence. The page does not publish incident counts, substantiation rates, investigation timelines, appeal procedures, or the date of its most recent two-year review.

Families cannot infer campus prevalence or response quality from policy language alone.

The public site does not expose a current full student handbook, adult-student boundary code, employee background-check protocol, sexual-misconduct reporting process, travel supervision ratios, emergency operations plan, or independent safeguarding audit. The parent portal says Safety & Security information is protected by login.

Ask to review the operative policies before enrollment.

Published tuition is not the whole family budget

For 2026–27, Middle School tuition is $65,800 and Upper School tuition is $68,900. Those are the latest official prices, not Fall 2027 prices.

At current rates, the Grade 8-to-9 division step alone is $3,100 before any annual increase.

Tuition includes educational expenses, hot lunch, morning snack, and participation in extracurricular athletics, arts, clubs, and organizations. It excludes transportation, books, and educational travel.

Optional insurance, Parent Association dues, private lessons, and laptop loss or damage can add further costs; several current amounts are not published.

Thayer reports that it awarded $11.6 million in need-based aid to 38.5% of students in 2024, with a $40,770 average grant. It offers no academic, artistic, or athletic merit awards.

The average is not a quote for any family, and the page publishes no income bands or distribution of grant sizes.

Admission readers make their decision without knowing who requested aid, but a separate aid committee has a limited budget. The school says more admissible aid applicants exist than it can fund in the first round; some may be wait-listed until money opens.

Need-blind admission reading is therefore not the same as unlimited need-based enrollment.

Both parents are generally expected to file and contribute, including divorced, separated, or never-married parents. Families reapply annually.

Thayer says a similar aid proportion may be expected if finances remain essentially unchanged, but that is not a four- or seven-year price guarantee.

The full-cost contract matters: half of tuition plus insurance charges and Parent Association dues is due June 15, the balance November 15, and a ten-month plan is available. Parents remain responsible for the full year after withdrawal or dismissal.

Ask for the 2027–28 fee sheet, refund-plan terms, and an aid award showing every covered and uncovered cost before signing.

Both are application grades; only Grade 9 starts a new division

The Fall 2027 admissions pages explicitly invite Middle School applicants entering Grades 5–8 and Upper School applicants entering Grades 9–11. Grade 6 candidates may take the ISEE or SSAT; Grade 9 candidates take the SSAT.

That confirms the doors, not the number of seats behind them.

Grade 6 joins the second year of a four-year Middle School. The entry is gentle in structure but not socially blank: some classmates began in Grade 5.

A new sixth grader should ask how many classmates are also new, how homerooms are formed, and how the school deliberately integrates arrivals into an established cohort.

Grade 9 is the first year of Upper School. It is a more visible reset, yet some classmates continue from Thayer Middle School; the 2026 commencement report notes graduates who had attended since the school’s inaugural fifth-grade class.

Families should ask for the actual external-entry and continuing-student mix for Fall 2027.

Public pages do not explain whether Grade 8 students automatically continue, face an internal review, or occupy a predetermined share of Grade 9. They also do not say whether Grade 6 seats represent planned expansion or replacement.

Those are better questions than trying to reverse-engineer odds from a school-wide acceptance claim.

A required interview, a January file, and grade-specific testing

Families begin with an inquiry and Ravenna account. Thayer’s general checklist requires an interview and a $50 application fee for local applicants, or $100 for international applicants.

Its international page instead says an interview is strongly encouraged but not required, so international families should confirm which rule controls in Ravenna. The file includes current English and mathematics evaluations, a school evaluation from a placement director, counselor, or principal, the most recent transcript and testing, and an optional arts, athletics, or activity reference.

The current Fall 2027 pages set January 15 as the application and prospective-family aid deadline and March 10 as the regular decision date. Files completed after January 15 are considered only on a rolling basis if places become available.

For this cycle, Thayer lists Middle and Upper School open houses on October 17, 2026. It will host ISEE testing November 14 and December 5 and SSAT testing December 12 and January 9.

These are host dates, not the only permitted test administrations; families should follow the testing organizations and Ravenna for registration details.

The same calendar lists a Grade 9–11 Upper School revisit on April 1, 2027, and Middle School revisits on March 30 and April 6. Accepted students may also arrange a Tiger Visit with classes, lunch, and optional after-school programming.

That is the moment to inspect a real schedule rather than rewatch the admissions presentation.

Some admissions pages have not been cleaned up consistently: the current “Getting Started” page carries 2026–27 test dates, while the deeper checklist and FAQ retain older dates in places. Use the live events calendar and Ravenna as the operational record, and ask admissions to confirm every Fall 2027 deadline in writing.

Our read

Our read: Thayer’s best feature is also its hardest fit test

Thayer’s design is unusually coherent. Grade 6 wraps a child in homeroom, advisor, shared humanities, arts, study skills, and a compulsory afternoon.

Grade 9 loosens that structure but keeps guardrails: required study halls, five core courses, health, common-good work, arts exposure, and two activity seasons. The school is not merely offering breadth; it is organizing the week around it.

For the right child, that can be liberating. A serious student does not have to abandon theater, a musician can still join a team, and a sixth grader has several adults and routines through which to be known.

The transit access and large need-based aid program widen the theoretical reach.

Thayer alongside Milton, Nobles and BB&N

Compare the Boston marketEleven Boston-area schools comparedCompare Thayer’s Grade 6 and Grade 9 day-school paths with city, suburban, public, gender-specific, and boarding choices.Build the regional processBoston private-school admissions guidePlace Ravenna, testing, January deadlines, aid, and the common March decision calendar inside a realistic regional plan.Compare a nearby coed day schoolMilton Academy parent guideCompare an adjacent South Shore location, K–12 structure, larger Grade 9 reset, transportation, seven-day boarding, and support.Compare another broad coed programNoble and Greenough School parent guideTest Thayer’s two-campus day model against a Grade 7–12 coed program with five-day boarding and a different entry rhythm.Compare urban accessBuckingham Browne & Nichols guideContrast Braintree and Red Line logistics with a Cambridge multi-campus program, bus network, and city-centered daily life.Compare a single-gender alternativeBelmont Hill School parent guideCompare coeducation, Grade 7 and Grade 9 entry, athletic culture, workload, aid, and weekday boarding.Browse the local marketBoston school guidesSee Greater Boston options without treating any one selective school as the entire search.Check our methodAdmissions Diary editorial standardsSee how we label school claims, older sources, inference, conflict, review signals, denominators, and unknowns.

Where to verify and keep reading

We favor direct links to the exact page or document a family may need next. Access dates matter because admissions, tuition, leadership, and programs change.

  • Getting Started

    Thayer Academy · Accessed September 2, 2026 · Current Ravenna process and Fall 2027 grade-specific testing requirements and host dates.

  • Application Checklist

    Thayer Academy · Accessed September 2, 2026 · Interview, fees, teacher evaluations, school report, transcript, optional reference, and testing; embedded test-center dates are stale, so the current events page controls.

  • Admissions Events & Calendar

    Thayer Academy · Accessed September 2, 2026 · Current Fall 2027 open houses, coffees, test-center dates, athletics event, and spring 2027 revisit dates.

  • Admissions FAQ

    Thayer Academy · Accessed September 2, 2026 · January 15, March 10, post-deadline, visit, wait-list, transport, and historical competitiveness context; some dates and enrollment text remain explicitly older.

  • Tuition & Financial Aid

    Thayer Academy · Accessed September 2, 2026 · 2026–27 tuition, inclusions and exclusions, 2024 aid figures, limited first-round funding, Clarity, two-parent policy, renewal, billing, insurance, and current Fall 2027 aid deadline.

  • Information for Newly Enrolled Middle School Students 2026

    Thayer Academy · Accessed September 2, 2026 · Current 2026–27 afternoon requirement, supervised study, language sequence, accelerated-math process, private lessons, and arrival and departure permissions.

  • Information for Newly Enrolled Upper School Students 2026

    Thayer Academy · Accessed September 2, 2026 · Current 24-block Grade 9 structure, required courses, elective capacity and alternates, arts rotation, language placement, and additional-cost lessons; some embedded placement dates are stale.

  • Facts & Figures

    Thayer Academy · Accessed September 2, 2026 · Live enrollment, faculty, class size, aid, diversity, course, AP, activity, arts, athletics, facility, and transportation claims; denominators and as-of dates are often not supplied.

  • Middle School

    Thayer Academy · Accessed September 2, 2026 · Current themes, Grade 5–6 homeroom advisory, Grade 7–8 departmentalization, daily extra help, parent visibility, and communication ladder.

  • Grade 6 Integrated Curriculum

    Thayer Academy · Accessed September 2, 2026 · Current Nature and Civilization theme, integrated humanities, Greek play, science, mathematics, design, and world-language sampling.

  • Middle School Mathematics

    Thayer Academy · Accessed September 2, 2026 · Current Grade 6 content, accelerated sections, outside-course placement tests, and the sequence through Grade 8 Algebra I options.

  • Upper School

    Thayer Academy · Accessed September 2, 2026 · Current independence model, required freshman study halls, parent information, grading and progress-report rhythm, and graduation requirements.

  • Upper School Course Catalog 2025–26

    Thayer Academy · Accessed September 2, 2026 · Latest publicly linked catalog found; prior-year evidence for level structure, placement factors, course cancellation, sixth-course approval, and graduation requirements—not a Fall 2027 offering guarantee.

  • Hale Learning Center

    Thayer Academy · Accessed September 2, 2026 · Current Middle and Upper direct support, study skills, evaluation review, testing environment, assistive technology, parent partnership, and outside-tutor coordination.

  • Counseling & Adolescent Development

    Thayer Academy · Accessed September 2, 2026 · Current four-person counseling roster, support areas, crisis and referral roles, collaboration, and health curricula; caseload and treatment boundaries are not published.

  • Health Services

    Thayer Academy · Accessed September 2, 2026 · Current division locations, nurses, health-office hours, telehealth space, family physician and insurance expectations, and coordination.

  • Arts Philosophy & Overview

    Thayer Academy · Accessed September 2, 2026 · Current pass/fail, noncompetitive arts philosophy and 90% Upper School participation claim.

  • Middle School Arts

    Thayer Academy · Accessed September 2, 2026 · Current universal trimester rotation, course and ensemble inventory, Grade 6 drama, and 2026–27 Grade 8 elective examples.

  • Upper School Arts

    Thayer Academy · Accessed September 2, 2026 · Current in-day courses, rehearsal coordination, inclusive fall musical, smaller priority-based spring production, and program counts.

  • Athletics Policies & Requirements

    Thayer Academy · Accessed September 2, 2026 · Current Middle School three-season requirement, Grade 9 two-sport rule and theater substitution, tryouts, playing-time framing, waivers, and offerings.

  • Teams, Schedules & Results

    Thayer Academy · Accessed September 2, 2026 · Current team inventory and schedules; does not publish cut, roster, or playing-time denominators.

  • Transportation

    Thayer Academy · Accessed September 2, 2026 · 2026–27 six routes, 15-rider minimum, 7:50 arrival, 4 p.m. departure, fees, Braintree Red Line and 230 bus access, S-Card, and a live inconsistency in T-only pricing.

  • Technology

    Thayer Academy · Accessed September 2, 2026 · Current school-issued MacBook, management and filtering, loaners, optional $100 insurance, and family liability for loss, theft, or uninsured damage.

  • Anti-Bullying Policy

    Thayer Academy · Accessed September 2, 2026 · Public definitions, scope, reporting and escalation, anonymous reports, investigation, safety, discipline, training, law enforcement, and two-year review commitment; incident data and review date are absent.

  • Parents

    Thayer Academy · Accessed September 2, 2026 · Public index showing that the current Safety & Security material and other operational resources require family login.

  • Engagement and Belonging

    Thayer Academy · Accessed September 2, 2026 · Current affinity and alliance framing and leadership; public outcome, participation, and climate denominators are absent.

  • Student Profiles

    Thayer Academy · Accessed September 2, 2026 · School-selected, school-produced Class of 2026 perspectives; useful for institutional values, not representative prevalence.

  • Board of Trustees

    Thayer Academy · Accessed September 2, 2026 · Current officers and roster; public governance mechanics, committees, minutes, and accountability channels remain limited.

  • College Matriculation

    Thayer Academy · Accessed September 2, 2026 · Official single-year 2023 table and multi-year 2020–23 lists. Our row sum is 130 enrollments at 69 institutions; the page does not provide a current cohort table or join this list to Class of 2026.

  • Thayer Commencement Recognizes the Class of 2026

    Thayer Academy · Accessed September 2, 2026 · Official June 6, 2026 report establishing a 122-graduate denominator and noting some students’ Grade 5-to-12 continuity.

  • Trustees of Thayer Academy

    ProPublica Nonprofit Explorer · Accessed September 2, 2026 · IRS-derived June 2025 revenue, expense, balance-sheet, compensation, and filing links.

  • Trustees of Thayer Academy Form 990, year ended June 2025

    Internal Revenue Service via ProPublica · Accessed September 2, 2026 · Latest public return, filed May 15, 2026, supporting revenue, expenses, surplus, assets, liabilities, and net assets.

  • Thayer Academy Reviews

    Niche · Accessed September 2, 2026 · Attributed 4.4 rating and 109 self-selected reviews, with supportive-teacher, challenge, community, diversity, administration, facilities, and long-day themes; not representative survey evidence.