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Cost & Financial Aid

Annual Tuition

  • St. Thomas2,790,000 (2026-27 rate)
  • Duchesne3,360,000 (2026-27 rate · Upper School)
  • O'Connell910,000 (2025-26 rate (newest published))
  • St. Catherine's2,056,000 (2026-27 rate · 9th grade; grades 10-12: $20,753)

Merit Scholarships

  • 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.)
  • DuchesneYes ($15,000/yr renewable: Janet Erskine Stuart (Catholic middle-schoolers), Madeleine Sophie Barat (continuing Duchesne 8th), Rose Philippine Duchesne (incoming 9th, other schools))
  • O'ConnellYes (Merit awards for academic performance + extracurricular involvement; parish/community scholarships; multi-student assistance)
  • St. Catherine'sNot published

Need-Based Financial Aid

  • St. ThomasYes (~1/3 of students aided; $2.7M+/yr; awards 10-95% of tuition; Blackbaud; deadline Jan 15, 2027; awards mid-March)
  • DuchesneYes ($2M+ awarded annually to ~26% of students; Clarity portal)
  • O'ConnellYes (Guardian Angel Scholarship (needs-based, volunteer component) via FACTS Grant & Aid; TEFA state accounts accepted)
  • St. Catherine'sYes (FACTS (Archdiocese form auto-applies to SCM's own program); opens Dec, due Mar. TEFA participant, but may reduce school aid when TEFA funds received.)

Sibling Discount

  • St. Thomas$2,000/yr per sibling after the first
  • DuchesneNot Published
  • O'ConnellMulti-student assistance available (amount not published)
  • St. Catherine's10% off for each younger sibling

Aid Award Notification

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

Included in Tuition

  • St. ThomasLaptop & technology
  • DuchesneNot Published
  • O'ConnellNot Published
  • St. Catherine'sNot Published

Payment Plans

  • St. ThomasNot Published
  • DuchesneFull (May 20) · 2-pay (May / Nov) · 12-month monthly
  • O'ConnellNot Published
  • St. Catherine'sNot Published
Commute from home
Tuition
$27,900

2026-27 rate

$33,600

2026-27 rate · Upper School

$9,100

2025-26 rate (newest published)

$20,560

2026-27 rate · 9th grade; grades 10-12: $20,753

What's included
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 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
Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Fees listed separately see fees
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
Sibling discount$2,000/yr per sibling after the firstNot PublishedMulti-student assistance available (amount not published)10% off for each younger sibling
Lower school on campusHS only
Yes

PK3–12

HS only
Yes

14 months–12th (Montessori)

Open houseDec 6, 2026Nov 1, 2026Not postedNot posted
Required test
ISEE

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

ISEE
In-house placement test
None
Application deadlineJan 15, 2027Not postedNot postedJan 15, 2027
Decision dateMar 5, 2027Not postedNot postedMar 5, 2027
Financial aid
Need-based + Merit
Need-based + Merit
Need-based + Merit
Need-based
AP courses2120Not postedNot posted
Enrollment7913008023
Student:Teacher9:18.1:14.5:114.4:1
Mass
Monthly
Not Published
Monthly
Monthly
Sports12 sports12 sports13 sports6 sports
Links

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