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Faith & Service

Mass

  • St. ThomasMonthly all-school Mass, plus Holy Days of Obligation (Weekly opportunities for Mass, Confession, Adoration and Rosary in addition)
  • St. Catherine'sMonthly (School-wide statement (all levels attend monthly); no high-school-specific schedule published. Daily student-led communal prayer; weekly Atrium (Catechesis of the Good Shepherd).)
  • DuchesneNot Published
  • O'ConnellMonthly all-school liturgy (on or off campus) (Day of week not published; handbook includes a bell schedule for 10 a.m. Mass days. All students attend.)

Service Program

  • St. Thomas"Champions for Change" — six service experiences annually (service year Jun 1 - May 31)
  • St. Catherine'sService-learning with 54 partner organizations (Houston Food Bank, Catholic Charities, Houston Zoo); HS community service trips and retreats (no published hour requirement)
  • DuchesneService Learning Requirement — off-campus volunteering with reflection component; 10,000+ community hours school-wide annually (per-student count not published)
  • O'ConnellNot Published

Religious Tradition

  • St. ThomasBasilian Fathers — founded 1900. The school describes itself as the oldest college-preparatory high school for young men in Texas.
  • St. Catherine'sFounded 1966 by Dominican Sisters; independent Catholic with Dominican charism; Catechesis of the Good Shepherd; HS theology aligned with the Archdiocese
  • DuchesneNot Published
  • O'ConnellNot Published

Retreats

  • St. ThomasCamp Aquinas freshman retreat; grade-level retreats; dedicated Director of Retreats. Basilian motto: "Teach me Goodness, Discipline, and Knowledge"
  • St. Catherine'sNot Published
  • DuchesneCampus Ministry (student-led): liturgies, Masses, prayer services, retreats; Five Sacred Heart Goals
  • O'ConnellNot Published

Theology All Four Years

  • St. ThomasNot Published
  • St. Catherine'sNot Published
  • DuchesneYes (12 credits; World Religions, Bioethics, Justice and Morality)
  • O'ConnellYes (Theology I-IV (4 credits); retreats included in tuition)

Service Hours Required

  • St. ThomasNot Published
  • St. Catherine'sNot Published
  • DuchesneNot Published
  • O'Connell100 (25 hrs/year all students + senior project of 50-100 hrs (graduation requirement). Motto: "Enter to learn, leave to serve.")
Commute from home
Tuition
$27,900

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
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
  • 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 discount$2,000/yr per sibling after the first10% 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 houseDec 6, 2026Not postedNov 1, 2026Not posted
Required test
ISEE

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

None
ISEE
In-house placement test
Application deadlineJan 15, 2027Jan 15, 2027Not postedNot posted
Decision dateMar 5, 2027Mar 5, 2027Not postedNot posted
Financial aid
Need-based + Merit
Need-based
Need-based + Merit
Need-based + Merit
AP courses21Not posted20Not posted
Enrollment7912330080
Student:Teacher9:114.4:18.1:14.5:1
Mass
Monthly
Monthly
Not Published
Monthly
Sports12 sports6 sports12 sports13 sports
Links

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