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Cost & Financial Aid

Annual Tuition

  • St. Thomas2,790,000 (2026-27 rate)
  • St. Catherine's2,056,000 (2026-27 rate · 9th grade; grades 10-12: $20,753)
  • O'Connell910,000 (2025-26 rate (newest published))
  • Frassati2,405,000 (2026-27 rate)

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.)
  • St. Catherine'sNot published
  • O'ConnellYes (Merit awards for academic performance + extracurricular involvement; parish/community scholarships; multi-student assistance)
  • FrassatiNot published (Only need-based aid described)

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)
  • 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.)
  • O'ConnellYes (Guardian Angel Scholarship (needs-based, volunteer component) via FACTS Grant & Aid; TEFA state accounts accepted)
  • FrassatiYes (28% of students receive aid; FACTS Grant & Aid opens Oct 7, 2026, due Jan 31, 2027; aid decisions independent of admission)

Sibling Discount

  • St. Thomas$2,000/yr per sibling after the first
  • St. Catherine's10% off for each younger sibling
  • O'ConnellMulti-student assistance available (amount not published)
  • Frassati$3,000 off 2nd student; $9,425 off 3rd (tuition only)

Included in Tuition

  • St. ThomasLaptop & technology
  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • FrassatiTechnology fee ($500) · Registration ($300) · Student activities ($400) · Textbooks ($650) (The $24,050 figure is tuition + these $1,850 general fees combined)

Payment Plans

  • St. ThomasNot Published
  • St. Catherine'sNot Published
  • O'ConnellNot Published
  • FrassatiAnnual (Jun, 2% discount) · Semi-annual (Jul 1 / Dec 1) · 10 monthly Jul-Apr (FACTS fees apply)
Commute from home
Tuition
$27,900

2026-27 rate

$20,560

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

$9,100

2025-26 rate (newest published)

$24,050

2026-27 rate

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
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Included in tuition see list
  • Technology fee ($500)
  • Registration ($300)
  • Student activities ($400)
  • Textbooks ($650)

Charged separately:

  • Application fee: $75–$125
  • Enrollment deposit (new families): $700
  • Athletics & Fine Arts fee: $250 (per sport/season) — optional
Sibling discount$2,000/yr per sibling after the first10% off for each younger siblingMulti-student assistance available (amount not published)$3,000 off 2nd student; $9,425 off 3rd (tuition only)
Lower school on campusHS only
Yes

14 months–12th (Montessori)

HS onlyHS only
Open houseDec 6, 2026Not postedNot postedOct 28, 2026
Required test
ISEE

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

None
In-house placement test
HSPT or ISEE

Offered on campus: Jan 9, 2027 · Jan 23, 2027

Application deadlineJan 15, 2027Jan 15, 2027Not postedNot posted
Decision dateMar 5, 2027Mar 5, 2027Not postedNot posted
Financial aid
Need-based + Merit
Need-based
Need-based + Merit
Need-based
AP courses21Not postedNot postedNot posted
Enrollment7912380364
Student:Teacher9:114.4:14.5:111:1
Mass
Monthly
Monthly
Monthly
Weekly

Thursdays, 9:15 AM

Sports12 sports6 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.