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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.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)
  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • St. AgnesISEE (School code 443420; up to 2 scores; first attempt before Dec 1 (ERB rule))

Recommendations

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

AP Courses

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

Dual Credit

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

World Languages

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

Honors Courses

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

Learning Support

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

AP Exams Scored 3+

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

Application Deadline

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

Family Interview

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

Language Credits Required

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

Notable Programs

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

Robotics

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

Test Score Deadline

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

2026-27 rate

$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

$28,400

2026-27 rate

What's included
Fees listed separately

No itemized fees published.

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

PK3–12

HS onlyHS only
Open houseNov 7, 2026Nov 1, 2026Dec 6, 2026Not posted
Required test
ISEE (or CLT for classical-school students)
ISEE
ISEE

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

ISEE

Offered on campus: Nov 14, 2026

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

No merit scholarships

AP coursesNot posted202125
EnrollmentNot Published300791934
Student:TeacherNot Published8.1:19:19:1
Mass
Daily
Not Published
Monthly
Weekly

Thursdays, 9:10 AM

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.