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Cost & Financial Aid

Annual Tuition

  • Duchesne3,360,000 (2026-27 rate · Upper School)
  • St. Thomas2,790,000 (2026-27 rate)
  • St. John XXIII2,210,000 (2026-27 rate)
  • O'Connell910,000 (2025-26 rate (newest published))

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))
  • 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. John XXIIIYes (SJ23 Merit Scholarship for students demonstrating excellence)
  • O'ConnellYes (Merit awards for academic performance + extracurricular involvement; parish/community scholarships; multi-student assistance)

Need-Based Financial Aid

  • DuchesneYes ($2M+ awarded annually to ~26% of students; Clarity portal)
  • St. ThomasYes (~1/3 of students aided; $2.7M+/yr; awards 10-95% of tuition; Blackbaud; deadline Jan 15, 2027; awards mid-March)
  • St. John XXIIIYes (Clarity ($60 fee); aid families also apply for TEFA (doesn't reduce SJ23 aid) and complete 10-40 volunteer hours)
  • O'ConnellYes (Guardian Angel Scholarship (needs-based, volunteer component) via FACTS Grant & Aid; TEFA state accounts accepted)

Sibling Discount

  • DuchesneNot Published
  • St. Thomas$2,000/yr per sibling after the first
  • St. John XXIII2nd student $17,680 ($4,420 off)
  • O'ConnellMulti-student assistance available (amount not published)

Payment Plans

  • DuchesneFull (May 20) · 2-pay (May / Nov) · 12-month monthly
  • St. ThomasNot Published
  • St. John XXIII1 payment (no fee) · 2 payments (+$100) · 10 payments May-Feb (+$200)
  • O'ConnellNot Published

Aid Award Notification

  • Duchesne2027-03-05 (Award acceptance Mar 24, 2027.)
  • St. ThomasNot Published
  • St. John XXIIINot Published
  • O'ConnellNot Published

Included in Tuition

  • DuchesneNot Published
  • St. ThomasLaptop & technology
  • St. John XXIIINot Published
  • O'ConnellNot Published
Commute from home
Tuition
$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

$22,100

2026-27 rate

$9,100

2025-26 rate (newest published)

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
Fees listed separately see fees
  • New Student Enrollment Fee: $500
  • Financial aid application (Clarity): $60 — optional
Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Sibling discountNot Published$2,000/yr per sibling after the first2nd student $17,680 ($4,420 off)Multi-student assistance available (amount not published)
Lower school on campus
Yes

PK3–12

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

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

ISEE
In-house placement test
Application deadlineNot postedJan 15, 2027Not postedNot posted
Decision dateNot postedMar 5, 2027Not postedNot posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based + Merit
Need-based + Merit
AP courses2021Not posted3
Enrollment30079143280
Student:Teacher8.1:19:111.3:14.5:1
MassNot Published
Monthly
Weekly

Daily Mass also offered

Monthly
Sports12 sports12 sports13 sports13 sports
Links

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