Compare Schools

Pick up to 4 schools to see them side by side.

3 of 4 selected

Explore by category

Pick a category to see everything these schools publish about it, side by side.

Mass

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).)
St. ThomasMonthly all-school Mass, plus Holy Days of Obligation (Weekly opportunities for Mass, Confession, Adoration and Rosary in addition)
St. John XXIIIWeekly all-school Mass (Day not published; moves for Solemnities and Holy Days. Students attend in full Mass uniform.)

Religious Tradition

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

Retreats

St. Catherine'sNot Published
St. ThomasCamp Aquinas freshman retreat; grade-level retreats; dedicated Director of Retreats. Basilian motto: "Teach me Goodness, Discipline, and Knowledge"
St. John XXIIIMandatory class retreats (Oboedientia/Pax/Virtus/Renovatio) + optional Kairos (jr/sr) and Quest (fr/so); daily Mass + weekly all-school Mass

Service Program

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)
St. Thomas"Champions for Change" — six service experiences annually (service year Jun 1 - May 31)
St. John XXIIINot Published

Daily Mass

St. Catherine'sNot Published
St. ThomasNot Published
St. John XXIIIAvailable daily throughout the year (Plus Eucharistic adoration, twice-yearly penance services, daily Angelus)

Service Hours by Grade

St. Catherine'sNot Published
St. ThomasNot Published
St. John XXIIIFreshmen 20 · Sophomores 25 · Juniors 25 · Seniors 30 (per year, with due dates each spring)

Commute from home

	St. Catherine's Montessori	St. Thomas High School	St. John XXIII College Preparatory
Tuition	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$27,900 2026-27 rate	$22,100 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	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 Enrollment Fee: $500 Financial aid application (Clarity): $60 — optional
Sibling discount	10% off for each younger sibling	$2,000/yr per sibling after the first	2nd student $17,680 ($4,420 off)
Lower school on campus	Yes 14 months–12th (Montessori)	HS only	HS only
Open house	Not posted	Dec 6, 2026	Not posted
Required test	None	ISEE Offered on campus: Nov 14, 2026 · Jan 9, 2027	ISEE
Application deadline	Jan 15, 2027	Jan 15, 2027	Not posted
Decision date	Mar 5, 2027	Mar 5, 2027	Not posted
Financial aid	Need-based	Need-based + Merit	Need-based + Merit
AP courses	Not posted	21	Not posted
Enrollment	23	791	432
Student:Teacher	14.4:1	9:1	11.3:1
Mass	Monthly	Monthly	Weekly Daily Mass also offered
Sports	6 sports	12 sports	13 sports
Links	Full profile Admissions	Full profile Admissions	Full profile Admissions

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