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Cost & Financial Aid

Annual Tuition

  • Duchesne3,360,000 (2026-27 rate · Upper School)
  • Frassati2,405,000 (2026-27 rate)
  • St. Thomas2,790,000 (2026-27 rate)
  • St. Peter CTHS1,500,000 (2026-27 rate · most families pay far less after aid)

Need-Based Financial Aid

  • DuchesneYes ($2M+ awarded annually to ~26% of students; Clarity portal)
  • FrassatiYes (28% of students receive aid; FACTS Grant & Aid opens Oct 7, 2026, due Jan 31, 2027; aid decisions independent of admission)
  • St. ThomasYes (~1/3 of students aided; $2.7M+/yr; awards 10-95% of tuition; Blackbaud; deadline Jan 15, 2027; awards mid-March)
  • St. Peter CTHSYes (95% of students aided (2025-26); approved TEFA provider (state accounts, from 2026-27))

Merit Scholarships

  • DuchesneYes ($15,000/yr renewable: Janet Erskine Stuart (Catholic middle-schoolers), Madeleine Sophie Barat (continuing Duchesne 8th), Rose Philippine Duchesne (incoming 9th, other schools))
  • FrassatiNot published (Only need-based aid described)
  • St. ThomasYes (Academic Scholarship Program (ISEE-based), Gabel Scholarship (80% tuition, ~2/yr), Basilian Fathers', Principal's/Aquinas scholarships (GPA-renewable). Sibling discount $2,000/yr after first.)
  • St. Peter CTHSNot Published

Payment Plans

  • DuchesneFull (May 20) · 2-pay (May / Nov) · 12-month monthly
  • FrassatiAnnual (Jun, 2% discount) · Semi-annual (Jul 1 / Dec 1) · 10 monthly Jul-Apr (FACTS fees apply)
  • St. ThomasNot Published
  • St. Peter CTHSMonthly (10 payments Jul-Apr) · By semester (Jul / Jan) · Annual (Jul)

Included in Tuition

  • DuchesneNot Published
  • FrassatiTechnology fee ($500) · Registration ($300) · Student activities ($400) · Textbooks ($650) (The $24,050 figure is tuition + these $1,850 general fees combined)
  • St. ThomasLaptop & technology
  • St. Peter CTHSNot Published

Sibling Discount

  • DuchesneNot Published
  • Frassati$3,000 off 2nd student; $9,425 off 3rd (tuition only)
  • St. Thomas$2,000/yr per sibling after the first
  • St. Peter CTHSNot Published

Aid Award Notification

  • Duchesne2027-03-05 (Award acceptance Mar 24, 2027.)
  • FrassatiNot Published
  • St. ThomasNot Published
  • St. Peter CTHSNot Published
Commute from home
Tuition
$33,600

2026-27 rate · Upper School

$24,050

2026-27 rate

$27,900

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
  • 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
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
Fees listed separately

No itemized fees published.

Sibling discountNot Published$3,000 off 2nd student; $9,425 off 3rd (tuition only)$2,000/yr per sibling after the firstNot Published
Lower school on campus
Yes

PK3–12

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

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

ISEE

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

None
Application deadlineNot postedNot postedJan 15, 2027Not posted
Decision dateNot postedNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based
Need-based + Merit
Need-based
AP courses20Not posted21Not posted
Enrollment30036479126
Student:Teacher8.1:111:19:1Not Published
MassNot Published
Weekly

Thursdays, 9:15 AM

Monthly
Monthly
Sports12 sports13 sports12 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.