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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. 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)
  • 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.)

World Languages

  • CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)
  • 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
  • O'ConnellSpanish I-III · German (IV dual credit) · American Sign Language I-III

Dual Credit

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

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. 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
  • O'ConnellNot Published

Notable Programs

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

Recommendations

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

AP Courses

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

Family Interview

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

Honors Courses

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

Learning Support

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

2026-27 rate

$20,560

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

$33,600

2026-27 rate · Upper School

$9,100

2025-26 rate (newest published)

What's included
Fees listed separately

No itemized fees published.

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
Fees listed separately see fees
  • Registration fee: $450
  • Technology fee: $200
  • Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Sibling discountNot Published10% off for each younger siblingNot PublishedMulti-student assistance available (amount not published)
Lower school on campusHS only
Yes

14 months–12th (Montessori)

Yes

PK3–12

HS only
Open houseNov 7, 2026Not postedNov 1, 2026Not posted
Required test
ISEE (or CLT for classical-school students)
None
ISEE
In-house placement test
Application deadlineJan 15, 2027Jan 15, 2027Not postedNot posted
Decision dateNot postedMar 5, 2027Not postedNot posted
Financial aid
Need-based + Merit
Need-based
Need-based + Merit
Need-based + Merit
AP coursesNot postedNot posted20Not posted
EnrollmentNot Published2330080
Student:TeacherNot Published14.4:18.1:14.5:1
Mass
Daily
Monthly
Not Published
Monthly
Sports11 sports6 sports12 sports13 sports
Links

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