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Academics

Entrance Exam

  • CathedralISEE (or CLT for classical-school students) (Scores due Jan 30, 2027. Application opens first week of Sept 2026, due Jan 15, 2027. A family interview is required (parents + student); a shadow day can be requested at the interview.)
  • St. AgnesISEE (School code 443420; up to 2 scores; first attempt before Dec 1 (ERB rule))
  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)

Recommendations

  • CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay
  • St. AgnesEnglish + Math teachers (due Jan 14, 2027)
  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts

AP Courses

  • CathedralNot Published
  • St. Agnes25
  • St. Thomas21 (40+ advanced/AP courses overall)
  • Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)

Dual Credit

  • CathedralYes (University of St. Thomas partnership (est. June 2023))
  • St. AgnesNot Published
  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)

World Languages

  • CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)
  • St. AgnesNot Published
  • St. ThomasFrench · Spanish · Mandarin · Latin
  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III

Honors Courses

  • CathedralNot Published
  • St. Agnes12
  • St. ThomasNot Published
  • Duchesne12 (Called "Advanced" courses)

Learning Support

  • CathedralLearning Enrichment Center — an individual learning plan for every student; tutoring, accommodations and testing support
  • St. AgnesNot Published
  • St. ThomasLearning Enrichment Center; college counseling with 4-year plan
  • DuchesneNot Published

Academic Model

  • CathedralClassical liberal arts — Trivium (Grammar/Logic/Rhetoric), Shakespeare every year, Junior Thesis, Senior Seminar + Senior Rome Trip. Four Pillars: Sacred Worship, Wisdom, Music, Art. (No AP courses are advertised; dual credit serves the advanced-coursework role.)
  • St. AgnesNot Published
  • St. ThomasNot Published
  • DuchesneNot Published

AP Exams Scored 3+

  • CathedralNot Published
  • St. Agnes97 (% of AP exams scored 3+)
  • St. ThomasNot Published
  • DuchesneNot Published

Application Deadline

  • CathedralNot Published
  • St. AgnesNot Published
  • St. Thomas2027-01-15 (Opens Aug 3, 2026; supporting docs due Jan 31; rolling after)
  • DuchesneNot Published

Family Interview

  • CathedralYes (Family interview at the school — parents and student)
  • St. AgnesNot Published
  • St. ThomasNot Published
  • DuchesneNot Published

Language Credits Required

  • CathedralNot Published
  • St. Agnes2
  • St. ThomasNot Published
  • DuchesneNot Published

Notable Programs

  • CathedralNot Published
  • St. AgnesNot Published
  • St. ThomasNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement

Robotics

  • CathedralNot Published
  • St. AgnesSpectrum 3847 — 12 consecutive FIRST Championship appearances
  • St. ThomasNot Published
  • DuchesneNot Published

Test Score Deadline

  • CathedralNot Published
  • St. Agnes2027-02-01
  • St. ThomasNot Published
  • DuchesneNot Published
Commute from home
Tuition
$22,850

2026-27 rate

$28,400

2026-27 rate

$27,900

2026-27 rate

$33,600

2026-27 rate · Upper School

What's included
Fees listed separately

No itemized fees published.

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
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
Sibling discountNot PublishedNot Published$2,000/yr per sibling after the firstNot Published
Lower school on campusHS onlyHS onlyHS only
Yes

PK3–12

Open houseNov 7, 2026Not postedDec 6, 2026Nov 1, 2026
Required test
ISEE (or CLT for classical-school students)
ISEE

Offered on campus: Nov 14, 2026

ISEE

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

ISEE
Application deadlineJan 15, 2027Not postedJan 15, 2027Not posted
Decision dateNot postedNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based

No merit scholarships

Need-based + Merit
Need-based + Merit
AP coursesNot posted252120
EnrollmentNot Published934791300
Student:TeacherNot Published9:19:18.1:1
Mass
Daily
Weekly

Thursdays, 9:10 AM

Monthly
Not Published
Sports11 sports12 sports12 sports12 sports
Links

“Not posted” means the school hasn’t published it yet for this admissions cycle — check each school’s full profile for sources.