How to Get Into Trinity School NYC: Acceptance Rate, ISEE Strategy, and Application Guide
By Rona Aydin
TL;DR: Trinity School’s acceptance rate is estimated at approximately 12-15% at Kindergarten and Grade 9 entry points (independent analyst estimates; Trinity does not publish official figures). Founded in 1709, Trinity is a coed K-12 Episcopal-affiliated independent day school on Manhattan’s Upper West Side enrolling approximately 1,001 students. Tuition for 2025-2026 is approximately $58,495 for the highest grade, with 20% of students receiving financial aid (average grant $53,227 in 2023-2024). Trinity is consistently ranked Niche’s #1 K-12 day school in NYC. For families navigating Trinity admissions strategy, schedule a consultation with Oriel Admissions.
| Trinity School at a Glance | Detail |
|---|---|
| Type | Coed K-12 Episcopal-affiliated independent day school |
| Founded | 1709 (one of oldest US schools) |
| Location | Manhattan, Upper West Side |
| Enrollment | ~1,001 students |
| Student-faculty ratio | 6:1 |
| Acceptance rate (estimate) | ~12-15% at Kindergarten and Grade 9 entry points |
| Primary entry points | Kindergarten and Grade 9 |
| Tuition (2025-2026) | ~$58,495 (highest grade) |
| Financial aid | 20% of students receive aid (avg grant ~$53,227, 2023-2024) |
| Affiliations | NY Interschool, Ivy Preparatory School League, Episcopal Church |
| Recognition | Niche #1 K-12 day school in NYC |
What is Trinity School and why is it NYC’s top coed day school?
Trinity School is a college-preparatory coeducational independent K-12 day school located on the Upper West Side of Manhattan. Founded in 1709, Trinity is one of the oldest continuously operating schools in the United States. The school enrolls approximately 1,001 students with a 6:1 student-teacher ratio and is consistently ranked Niche’s #1 K-12 day school in NYC and among the top private K-12 schools nationally. Trinity’s Lower School covers Kindergarten through Grade 4; the Middle and Upper Schools serve Grades 5-12.
Trinity’s defining characteristics are its traditional liberal arts curriculum, the centrality of discussion-based classroom pedagogy, and the broad academic offerings supported by a large faculty. The school maintains affiliation with the Episcopal Church and incorporates a Chapel program, though it serves families of all religious and non-religious backgrounds. Trinity is a member of both the New York Interschool and the Ivy Preparatory School League.
What is Trinity School’s acceptance rate?
Trinity does not publish an official acceptance rate. Based on consultations with admissions advisors and patterns observed at peer schools of similar size, Trinity’s acceptance rate at Kindergarten and Grade 9 entry points is generally estimated at approximately 12-15%. Trinity’s Kindergarten cohort is the largest entry point, with most students entering Trinity at this grade. Grade 9 admits a smaller incoming class through attrition and intentional expansion of the high school cohort.
Non-entry grades (Grades 1-4, 5-7 outside of Middle School entry, 10-11) admit only when current students leave the school, which is uncommon. Trinity advises that “since most children come to Trinity in Kindergarten and Grade 9, spaces for Grades 5-7, 10, and 11 are available only through attrition” (Trinity School Office of Admission).
How does Trinity’s admissions process work?
Trinity uses the Finalsite Admissions Portal for all applications. The application opens in early September and closes in early January, following the ISAAGNY coordinated calendar. A complete Trinity application includes the online application form, parent/guardian statement, student essay (Grade 5 and up), teacher recommendations (current English and Math teachers plus counselor or principal for Grade 9; current teacher for Grades 5-7), transcripts for the current year and the previous two years, ISEE or SSAT scores (Grade 5 and up), and the required in-person interview and tour. Financial aid applicants additionally complete the Clarity Financial Aid application by January 9.
Trinity offers an in-person interview and tour to all applicants. Limited remote interview options are available; in-person is preferred. The interview is conversational rather than test-like, evaluating intellectual curiosity, self-awareness, and engagement with ideas. Trinity’s Open House events (held in the fall) precede the application cycle and are an important touchpoint for Grade 9 applicants.
What does Trinity cost in 2025-26 and what financial aid is available?
Trinity’s tuition for the 2025-2026 academic year is approximately $58,495 for the highest grade offered (Niche-reported figure). Trinity’s tuition is largely all-inclusive: families do not pay additional fees for textbooks, lunch, technology, or most extracurricular activities. Parents’ Association dues and a small registration fee apply.
Trinity’s financial aid program supports approximately 20% of the student body. In 2023-2024, the average financial aid grant was $53,227 (Test Innovators citing Trinity admissions data). Aid is determined through the Clarity Financial Aid application. The financial aid application deadline is January 9 for the upcoming academic year. Trinity does not offer merit-based aid; all assistance is need-based. Trinity’s endowment funds support the financial aid program along with general operations.
What ISEE or SSAT scores does Trinity expect?
Trinity accepts both the ISEE and SSAT for Grade 5-12 applicants. The school code for the ISEE is 334090; the school code for the SSAT is 7769. Trinity does not publish a required cutoff score, but competitive applicants typically present ISEE stanines in the 7-9 range across the four sections (Verbal, Quantitative, Reading, Math) or SSAT percentile scores at the 90th percentile or above. Strong scores do not guarantee admission; weak scores are rarely decisive on their own when other application elements are exceptional.
For Kindergarten applicants, Trinity does not require outside testing. For Grade 1 applicants, no outside testing is required. For Grade 2-4 applicants, Trinity asks for ERB Primary testing (a developmentally appropriate assessment scheduled through the Educational Records Bureau).
How does Trinity compare to Dalton, Collegiate, and Horace Mann?
Trinity, Dalton, Collegiate, and Horace Mann are the four most prestigious coed (Trinity, Dalton, Horace Mann) and all-boys (Collegiate) K-12 day schools in NYC. Trinity is the most traditional in pedagogical structure, emphasizing humanities, classics, and small discussion-based classes. Dalton operates under the progressive Dalton Plan with greater individual student autonomy. Collegiate (all-boys, smaller at 670 students) offers a tight-knit environment with strong tradition. Horace Mann (in Riverdale, with 1,800 students) offers the broadest curricular menu including over 180 courses and 20+ AP options.
All four schools produce comparable elite college matriculation outcomes. The right choice depends on culture, size, and specific child fit. Trinity’s reputation among admissions consultants emphasizes traditional academic rigor and the strength of teacher-student relationships in small classes. Families should attend each school’s Open House before applying.
What college outcomes do Trinity graduates achieve?
Trinity School produces among the strongest college matriculation outcomes of any coed K-12 day school in the United States. The school regularly sends graduates to Harvard, Yale, Princeton, Columbia, Penn, Brown, Cornell, Stanford, MIT, Duke, and the University of Chicago. Trinity’s college counseling office is among the most experienced in NYC, supporting students through individualized college lists across reach, target, and likely categories. Approximately 100% of Trinity graduates enroll at four-year colleges.
Trinity’s reputation among elite university admissions offices is established; admissions officers know the school’s grading rigor and curriculum depth. This reputation does not translate into automatic admission. Ivy League acceptance rates have reached historic lows, and even Trinity graduates face rejection at the most selective programs. Trinity families benefit from strong school-based college counseling and the school’s established relationships, but applicants must still build distinctive applications.
How should families maximize their Trinity School chances?
For Kindergarten applicants, the strongest determinants of admission are the child visit (which the admissions office may extend to a full day in a classroom), nursery school recommendation, parent statement, and sibling/legacy status. Strong nursery-school relationships matter; Trinity reviewers value substantive recommendations that speak to the child’s curiosity, peer interactions, and academic readiness. Attend Trinity’s Open House events held in the fall and submit applications early in the cycle to secure interview slots.
For Grade 5-12 applicants, the interview, student essay, and teacher recommendations dominate the file alongside strong ISEE or SSAT scores. Trinity’s admissions office explicitly notes that “we may be unable to accommodate requests made after the deadline, which may result in an incomplete application.” Schedule the interview promptly upon application receipt. Apply to peer schools (Dalton, Collegiate for boys, Horace Mann, Spence and Brearley for girls) as a parallel strategy; the ISAAGNY decision day in mid-March will concentrate the outcome.
Frequently Asked Questions About Trinity School Admissions
Trinity School does not publish an official acceptance rate. Independent estimates and admissions consultants generally describe Trinity as one of the two most selective coed K-12 day schools in NYC, with acceptance rates estimated near 12-15% at the primary entry points (Kindergarten and Grade 9). The school enrolls approximately 1,001 students across grades K-12 with a 6:1 student-faculty ratio. Non-entry-grade applications are reviewed only through attrition openings.
Trinity’s tuition for the 2025-2026 academic year is approximately $58,495 for the highest grade offered (Niche-reported figure). Trinity’s tuition is largely all-inclusive: families do not pay additional fees for most extras. Parents’ Association dues, application fees, and other small fees apply. Approximately 20% of Trinity students receive need-based financial aid, with the average grant in 2023-2024 of $53,227. The financial aid application is due January 9 each year.
Trinity’s Kindergarten application opens September 2 of the prior calendar year (for 2027-2028 entry: September 8, 2026). Grade 9 application information is released in July, with the application opening in early September. Financial aid applications through Clarity are due January 9. Trinity’s admissions office contacts applicants individually to schedule interview and tour appointments. Decisions follow ISAAGNY’s coordinated calendar, typically mid-March for Kindergarten and Grade 9.
Trinity accepts both ISEE and SSAT scores. Testing codes for Trinity are 334090 (ISEE) and 7769 (SSAT). The school does not publish a required cutoff score. Competitive applicants at Trinity present ISEE stanines in the 7-9 range across Verbal, Quantitative, Reading, and Math sections. For Kindergarten-Grade 4 applicants, Trinity does not require outside testing for Kindergarten or Grade 1; ERB Primary testing is required for Grades 2-4. The admissions office reviews scores holistically alongside teacher recommendations and the interview.
Trinity and Dalton differ more in culture than in academic ceiling. Trinity offers a traditional liberal arts curriculum with strong humanities and small group discussion. Dalton operates under the progressive Dalton Plan, which emphasizes individualized learning, House structure, and experiential labs. Trinity’s 1,001 students fit a smaller, more traditional environment; Dalton’s 1,300 students operate within a more loosely structured progressive framework. Academically gifted students thrive at both; the right choice depends on whether your child does best in traditional structure or self-directed exploration.
Trinity’s in-person interview (offered to all Grade 5-12 applicants, with limited remote options) evaluates intellectual curiosity, conversational depth, and developmental fit. The school explicitly states that interviews are a key step requiring applicant responsibility to schedule by the stated deadline. For Kindergarten applicants, the school may invite the child to spend a day on campus in a classroom to observe academic and social interaction. Parent statements (no formal parent interview) supplement the file. Translators are available for Grade 9 interviews upon request.
Trinity produces among the strongest college matriculation outcomes of any coed K-12 day school in the United States. The school is consistently ranked Niche’s #1 K-12 day school in NYC. Trinity graduates regularly matriculate to Harvard, Yale, Princeton, Columbia, Penn, Brown, Cornell, Stanford, MIT, and Duke, with strong secondary placement at Williams, Amherst, Bowdoin, and other elite liberal arts colleges. Approximately 100% of Trinity graduates enroll at four-year colleges.
Yes. Trinity gives meaningful preference to siblings of current students and to children of alumni, particularly at the Kindergarten entry point. Sibling and legacy preference do not guarantee admission: applicants must still demonstrate academic readiness and developmental fit. The strength of sibling preference is highest at Kindergarten and diminishes at Grade 9. Trinity also values robust nursery school recommendations and gives some weight to feeder relationships through the application review process.
Sources: Trinity School Admissions 5-12, Trinity School Tuition & Financial Aid, Trinity School Admissions K-4, Niche: Trinity School Profile, Independent Schools Admissions Association of Greater New York (ISAAGNY), National Association of Independent Schools (NAIS).
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