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Cost & Financial Aid

Annual Tuition

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

Merit Scholarships

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

Need-Based Financial Aid

  • St. John XXIIIYes (Clarity ($60 fee); aid families also apply for TEFA (doesn't reduce SJ23 aid) and complete 10-40 volunteer hours)
  • 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)
  • O'ConnellYes (Guardian Angel Scholarship (needs-based, volunteer component) via FACTS Grant & Aid; TEFA state accounts accepted)

Sibling Discount

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

Payment Plans

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

Aid Award Notification

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

Included in Tuition

  • St. John XXIIINot Published
  • DuchesneNot Published
  • St. ThomasLaptop & technology
  • O'ConnellNot Published
Commute from home
Tuition
$22,100

2026-27 rate

$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

$9,100

2025-26 rate (newest published)

What's included
Fees listed separately see fees
  • New Student Enrollment Fee: $500
  • Financial aid application (Clarity): $60 — optional
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
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Sibling discount2nd student $17,680 ($4,420 off)Not Published$2,000/yr per sibling after the firstMulti-student assistance available (amount not published)
Lower school on campusHS only
Yes

PK3–12

HS onlyHS only
Open houseNot postedNov 1, 2026Dec 6, 2026Not posted
Required test
ISEE
ISEE
ISEE

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

In-house placement test
Application deadlineNot postedNot postedJan 15, 2027Not posted
Decision dateNot postedNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based + Merit
Need-based + Merit
AP coursesNot posted2021Not posted
Enrollment43230079180
Student:Teacher11.3:18.1:19:14.5:1
Mass
Weekly

Daily Mass also offered

Not Published
Monthly
Monthly
Sports13 sports12 sports12 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.