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Cost & Financial Aid

Annual Tuition

  • St. Catherine's2,056,000 (2026-27 rate · 9th grade; grades 10-12: $20,753)
  • Duchesne3,360,000 (2026-27 rate · Upper School)
  • St. Peter CTHS1,500,000 (2026-27 rate · most families pay far less after aid)

Need-Based Financial Aid

  • 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.)
  • DuchesneYes ($2M+ awarded annually to ~26% of students; Clarity portal)
  • St. Peter CTHSYes (95% of students aided (2025-26); approved TEFA provider (state accounts, from 2026-27))

Merit Scholarships

  • St. Catherine'sNot published
  • 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. Peter CTHSNot Published

Payment Plans

  • St. Catherine'sNot Published
  • DuchesneFull (May 20) · 2-pay (May / Nov) · 12-month monthly
  • St. Peter CTHSMonthly (10 payments Jul-Apr) · By semester (Jul / Jan) · Annual (Jul)

Aid Award Notification

  • St. Catherine'sNot Published
  • Duchesne2027-03-05 (Award acceptance Mar 24, 2027.)
  • St. Peter CTHSNot Published

Sibling Discount

  • St. Catherine's10% off for each younger sibling
  • DuchesneNot Published
  • St. Peter CTHSNot Published
Commute from home
Tuition
$20,560

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

$33,600

2026-27 rate · Upper School

$15,000

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

What's included
Fees listed separately see fees
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
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

No itemized fees published.

Sibling discount10% off for each younger siblingNot PublishedNot Published
Lower school on campus
Yes

14 months–12th (Montessori)

Yes

PK3–12

HS only
Open houseNot postedNov 1, 2026Not posted
Required test
None
ISEE
None
Application deadlineJan 15, 2027Not postedNot posted
Decision dateMar 5, 2027Not postedNot posted
Financial aid
Need-based
Need-based + Merit
Need-based
AP coursesNot posted20Not posted
Enrollment2330026
Student:Teacher14.4:18.1:1Not Published
Mass
Monthly
Not Published
Monthly
Sports6 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.