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Academics

Entrance Exam

  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)
  • 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.)
  • St. Pius XISEE (School code 571082; 9th-grade applicants. Transfers submit PSAT/SAT/ACT. School offers an ISEE prep course. Application opens Sept 1.)

Dual Credit

  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)
  • St. Catherine'sNot Published
  • St. Pius XYes (Via college partnerships (institutions not named))

Recommendations

  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts
  • St. Catherine'sNot Published
  • St. Pius XMath + English teachers, Principal/Counselor; student essay; transcripts

World Languages

  • St. ThomasFrench · Spanish · Mandarin · Latin
  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III
  • St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
  • St. Pius XNot Published

AP Courses

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

Learning Support

  • St. ThomasLearning Enrichment Center; college counseling with 4-year plan
  • DuchesneNot Published
  • St. Catherine'sNot Published
  • St. Pius XPaul A. Gilliam '98 Learning for Success program — structured academic support ($2,500/yr)

Notable Programs

  • St. ThomasNot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
  • St. Catherine'sNot Published
  • St. Pius X"Engineer Your World I & II," Computer Science; electives in Business, Law, Psychology, Media Arts

Academic Model

  • St. ThomasNot Published
  • DuchesneNot 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.)
  • St. Pius XNot Published

Application Deadline

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

Honors & AP Courses

  • St. ThomasNot Published
  • DuchesneNot Published
  • St. Catherine'sNot Published
  • St. Pius X25 (Honors/AP combined; 490 AP exams, 49 AP Scholars in 2025)

Honors Courses

  • St. ThomasNot Published
  • Duchesne12 (Called "Advanced" courses)
  • St. Catherine'sNot Published
  • St. Pius XNot Published
Commute from home
Tuition
$27,900

2026-27 rate

$33,600

2026-27 rate · Upper School

$20,560

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

$22,850

2026-27 rate

What's included
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
  • 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
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
Fees listed separately see fees
  • Registration fee (new students): $350
  • Graduation fee (seniors): $280 (seniors)
  • Athletics fee: $150–$350 (per sport) — optional
  • Learning for Success program: $2,500 (if enrolled in program) — optional
  • Bus transportation: $1,550 — optional
Sibling discount$2,000/yr per sibling after the firstNot Published10% off for each younger siblingHalf tuition for a 3rd concurrently enrolled child
Lower school on campusHS only
Yes

PK3–12

Yes

14 months–12th (Montessori)

HS only
Open houseDec 6, 2026Nov 1, 2026Not postedNot posted
Required test
ISEE

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

ISEE
None
ISEE
Application deadlineJan 15, 2027Not postedJan 15, 2027Not posted
Decision dateMar 5, 2027Not postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based
Need-based + Merit
AP courses2120Not postedNot posted
Enrollment79130023655
Student:Teacher9:18.1:114.4:17:1
Mass
Monthly
Not Published
Monthly
Monthly
Sports12 sports12 sports6 sports14 sports
Links

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