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Academics

Entrance Exam

  • DuchesneISEE (Administered externally; campus tour + family interview also required)
  • St. John XXIIIISEE (School code 570048; 9th grade. 11th/12th transfers submit PSAT. Last cycle: opened Sept 1, deadline Jan 15, docs Jan 31, rolling after.)
  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • 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.)

Recommendations

  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts
  • St. John XXIIITeacher recommendations (school forms) + official transcripts; interviews for transfers only
  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay

World Languages

  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III
  • St. John XXIIISpanish (confirmed via Spanish NHS; full list not published)
  • St. ThomasFrench · Spanish · Mandarin · Latin
  • CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)

Dual Credit

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

AP Courses

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

Learning Support

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

Academic Model

  • DuchesneNot Published
  • St. John XXIIINot Published
  • St. ThomasNot Published
  • 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.)

AP Program

  • DuchesneNot Published
  • St. John XXIIIAP and honors coursework offered (count not published; Course Selection Guide not public)
  • St. ThomasNot Published
  • CathedralNot Published

Application Deadline

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

Family Interview

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

Honors Courses

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

Notable Programs

  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
  • St. John XXIIINot Published
  • St. ThomasNot Published
  • CathedralNot Published
Commute from home
Tuition
$33,600

2026-27 rate · Upper School

$22,100

2026-27 rate

$27,900

2026-27 rate

$22,850

2026-27 rate

What's included
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 see fees
  • New Student Enrollment Fee: $500
  • Financial aid application (Clarity): $60 — 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

No itemized fees published.

Sibling discountNot Published2nd student $17,680 ($4,420 off)$2,000/yr per sibling after the firstNot Published
Lower school on campus
Yes

PK3–12

HS onlyHS onlyHS only
Open houseNov 1, 2026Not postedDec 6, 2026Nov 7, 2026
Required test
ISEE
ISEE
ISEE

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

ISEE (or CLT for classical-school students)
Application deadlineNot postedNot postedJan 15, 2027Jan 15, 2027
Decision dateNot postedNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based + Merit
Need-based + Merit
AP courses20Not posted21Not posted
Enrollment300432791Not Published
Student:Teacher8.1:111.3:19:1Not Published
MassNot Published
Weekly

Daily Mass also offered

Monthly
Daily
Sports12 sports13 sports12 sports11 sports
Links

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