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Daily Life

Enrollment (school-reported)

  • DuchesneNot Published
  • St. Thomas791 (2025-26; no NCES record exists for this school)
  • Frassati364 (2025-26 Fast Facts; NCES 2023-24: 321 — young, growing school (opened 2013))
  • St. Peter CTHS26 (2024-25 (15 freshmen + 11 sophomores), growing one grade/year — first senior class 2026-27. Founded 2022; too new for an NCES record.)

Class Schedule

  • DuchesneSix-term modular "MOD" schedule — 80-minute classes, 3-4 courses per mod, 29-30 days/mod
  • St. Thomas7:50 AM - 3:10 PM modified block — four 80-minute classes, 35-min advisory, 55-min lunch
  • FrassatiNot Published
  • St. Peter CTHSNot Published

Dress Code

  • DuchesneNot Published
  • St. ThomasCollared shirt + khakis + dress shoes; dress days add white button-up, red tie, blue blazer
  • FrassatiRisse Brothers + Lands' End uniforms
  • St. Peter CTHSNot Published

Student–Teacher Ratio (federal data)

  • Duchesne8.1:1 (NCES 2023-24, campus-wide)
  • St. ThomasNot Published
  • Frassati12.8:1 (NCES 2023-24: 321 / 25.0 FTE; school reports 11:1)
  • St. Peter CTHSNot Published

Transportation

  • DuchesneNot Published
  • St. ThomasNo bus service; CarpooltoSchool partnership; parking garage (permit + fee)
  • FrassatiNot Published
  • St. Peter CTHSSchool transports students to HCC campuses during the school day (home transport not published)

Enrollment (federal data)

  • Duchesne300 (Upper School 9-12 (NCES 2023-24: 89/74/65/72). Total campus 761.)
  • St. ThomasNot Published
  • FrassatiNot Published
  • St. Peter CTHSNot Published

Full Campus

  • DuchesnePK3–12 (all-girls); Upper School is grades 9–12
  • St. ThomasNot Published
  • FrassatiNot Published
  • St. Peter CTHSNot Published
Commute from home
Tuition
$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

$24,050

2026-27 rate

$15,000

2026-27 rate · most families pay far less after aid

What's included
Fees listed separately see fees
  • New Student Fee: $1,500
  • Enrollment deposit: $1,000
  • Technology fee (Grade 9): $2,600
  • Textbooks: $350 (approximate, Upper School)
  • Grade 10 College Tour: $500 (grade 10)
  • Graduation fee: $600 (seniors)
  • Class trips: $175–$2,800 — optional
  • AP exams: $100–$200 (per exam) — optional
  • Athletics fee: $150–$300 (per sport) — optional
Included in tuition see list
  • Laptop & technology

Charged separately:

  • Application fee: $75
  • Registration fee: $700
  • Camp Aquinas (freshman retreat): $650 (freshmen)
  • Class retreat: $325 (returning/transfer students)
  • Books: $550
  • Athletics fee: $250 (per sport) — optional
  • AP exam: $99 (per course) — optional
Included in tuition see list
  • Technology fee ($500)
  • Registration ($300)
  • Student activities ($400)
  • Textbooks ($650)

Charged separately:

  • Application fee: $75–$125
  • Enrollment deposit (new families): $700
  • Athletics & Fine Arts fee: $250 (per sport/season) — optional
Fees listed separately

No itemized fees published.

Sibling discountNot Published$2,000/yr per sibling after the first$3,000 off 2nd student; $9,425 off 3rd (tuition only)Not Published
Lower school on campus
Yes

PK3–12

HS onlyHS onlyHS only
Open houseNov 1, 2026Dec 6, 2026Oct 28, 2026Not posted
Required test
ISEE
ISEE

Offered on campus: Nov 14, 2026 · Jan 9, 2027

HSPT or ISEE

Offered on campus: Jan 9, 2027 · Jan 23, 2027

None
Application deadlineNot postedJan 15, 2027Not postedNot posted
Decision dateNot postedMar 5, 2027Not postedNot posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based
Need-based
AP courses2021Not postedNot posted
Enrollment30079136426
Student:Teacher8.1:19:111:1Not Published
MassNot Published
Monthly
Weekly

Thursdays, 9:15 AM

Monthly
Sports12 sports12 sports13 sportsNot posted
Links

“Not posted” means the school hasn’t published it yet for this admissions cycle — check each school’s full profile for sources.