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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.)
  • O'ConnellIn-house placement test (No ISEE/HSPT — 30-60 min Math & Reading placement test, offered Mon-Thu 8:30-2:30. Rolling admissions, no published deadlines.)
  • 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.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)

World Languages

  • CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)
  • O'ConnellSpanish I-III · German (IV dual credit) · American Sign Language I-III
  • St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III

Dual Credit

  • CathedralYes (University of St. Thomas partnership (est. June 2023))
  • O'ConnellYes (Via Galveston College: English III/IV, US History, Government, Spanish I/II, German IV (TSI test required))
  • St. Catherine'sNot Published
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)

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.)
  • O'ConnellNot Published
  • 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.)
  • DuchesneNot Published

Notable Programs

  • CathedralNot Published
  • O'ConnellSTEAM electives: Robotics, Computer Science, Esports, Horticulture, Graphic Design; Honors Engineering I & II; A La Carte program for homeschoolers
  • St. Catherine'sNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement

Recommendations

  • CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay
  • O'ConnellNot Published
  • St. Catherine'sNot Published
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts

AP Courses

  • CathedralNot Published
  • O'ConnellNot Published
  • St. Catherine'sNot Published
  • Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)

Family Interview

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

Honors Courses

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

Learning Support

  • CathedralLearning Enrichment Center — an individual learning plan for every student; tutoring, accommodations and testing support
  • O'ConnellNot Published
  • St. Catherine'sNot Published
  • DuchesneNot Published
Commute from home
Tuition
$22,850

2026-27 rate

$9,100

2025-26 rate (newest published)

$20,560

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

$33,600

2026-27 rate · Upper School

What's included
Fees listed separately

No itemized fees published.

Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — 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
  • 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 PublishedMulti-student assistance available (amount not published)10% off for each younger siblingNot Published
Lower school on campusHS onlyHS only
Yes

14 months–12th (Montessori)

Yes

PK3–12

Open houseNov 7, 2026Not postedNot postedNov 1, 2026
Required test
ISEE (or CLT for classical-school students)
In-house placement test
None
ISEE
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
Need-based + Merit
AP coursesNot postedNot postedNot posted20
EnrollmentNot Published8023300
Student:TeacherNot Published4.5:114.4:18.1:1
Mass
Daily
Monthly
Monthly
Not Published
Sports11 sports13 sports6 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.