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Cost & Financial Aid

Annual Tuition

  • St. Agnes2,840,000 (2026-27 rate)
  • 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. AgnesYes (~20% of students receive aid; ~$2.95M/yr (2025-26). Blackbaud, school code 14060, $35 fee.)
  • 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))

Payment Plans

  • St. AgnesAnnual (Jul 1) · Semi-annual $13,950 × 2 (Jul 1 / Dec 1) · 10 monthly Jul–Apr (+4% deferral fee)
  • DuchesneFull (May 20) · 2-pay (May / Nov) · 12-month monthly
  • St. Peter CTHSMonthly (10 payments Jul-Apr) · By semester (Jul / Jan) · Annual (Jul)

Merit Scholarships

  • St. AgnesNo (Explicit: aid is need-based only, regardless of talents)
  • 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

Aid Award Notification

  • St. AgnesNot Published
  • Duchesne2027-03-05 (Award acceptance Mar 24, 2027.)
  • St. Peter CTHSNot Published
Commute from home
Tuition
$28,400

2026-27 rate

$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: $75 ($125 for transfer applicants)
  • Enrollment deposit: $500
  • Tablet PC (technology): $1,725
  • AP test fee: $105 (per AP / Honors-AP class) — optional
  • Senior fee: $350 (seniors only) — optional
  • Athletics fee: $150 (per sport) — 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

No itemized fees published.

Sibling discountNot PublishedNot PublishedNot Published
Lower school on campusHS only
Yes

PK3–12

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

Offered on campus: Nov 14, 2026

ISEE
None
Application deadlineNot postedNot postedNot posted
Decision dateNot postedNot postedNot posted
Financial aid
Need-based

No merit scholarships

Need-based + Merit
Need-based
AP courses2520Not posted
Enrollment93430026
Student:Teacher9:18.1:1Not Published
Mass
Weekly

Thursdays, 9:10 AM

Not Published
Monthly
Sports12 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.