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Academics

Entrance Exam

  • St. Catherine'sNone (No admission test. Inquiry → adults-only tour → director meeting → application ($150) + records + lesson samples → student classroom visit. 9th graders enter the Adolescent Community (gr 7-9); High School entry is gr 10-12.)
  • 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.)

World Languages

  • St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
  • 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

Dual Credit

  • St. Catherine'sNot Published
  • 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)

Recommendations

  • St. Catherine'sNot Published
  • 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

Academic Model

  • St. Catherine'sAMI-accredited Catholic Montessori adolescent program — four integrated areas (Theology, Integrated Humanities, Integrated Sciences, Mathematics); internships (Houston Methodist, law/design firms), university partnerships (St. Thomas, Texas A&M AgriLife), independent study; graduates build a "body of work" (No AP program; university partnerships and internships serve the advanced-work role.)
  • 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

AP Courses

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

Learning Support

  • St. Catherine'sNot Published
  • 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

Application Deadline

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

Family Interview

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

Honors Courses

  • St. Catherine'sNot Published
  • CathedralNot Published
  • Duchesne12 (Called "Advanced" courses)
  • St. ThomasNot Published

Notable Programs

  • St. Catherine'sNot Published
  • CathedralNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
  • St. ThomasNot Published
Commute from home
Tuition
$20,560

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

$22,850

2026-27 rate

$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

What's included
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

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
Sibling discount10% off for each younger siblingNot PublishedNot Published$2,000/yr per sibling after the first
Lower school on campus
Yes

14 months–12th (Montessori)

HS only
Yes

PK3–12

HS only
Open houseNot postedNov 7, 2026Nov 1, 2026Dec 6, 2026
Required test
None
ISEE (or CLT for classical-school students)
ISEE
ISEE

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

Application deadlineJan 15, 2027Jan 15, 2027Not postedJan 15, 2027
Decision dateMar 5, 2027Not postedNot postedMar 5, 2027
Financial aid
Need-based
Need-based + Merit
Need-based + Merit
Need-based + Merit
AP coursesNot postedNot posted2021
Enrollment23Not Published300791
Student:Teacher14.4:1Not Published8.1:19:1
Mass
Monthly
Daily
Not Published
Monthly
Sports6 sports11 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.