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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).)
FrassatiWeekly — Thursdays, 9:15 AM (All-School Mass) (Plus monthly Eucharistic Adoration, scaling from a short prayer in 9th grade to a full Holy Hour by senior year)
St. John XXIIIWeekly all-school Mass (Day not published; moves for Solemnities and Holy Days. Students attend in full Mass uniform.)

Retreats

St. Catherine'sNot Published
FrassatiYearly class retreats; weekly All-School Mass (Thu 9:15); monthly Eucharistic Adoration scaling to a full senior Holy Hour; Italy pilgrimage "In the Footsteps of Pier Giorgio"
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)
FrassatiPier Giorgio Service Learning: 9th weekly school-community duty; 10th 10 hrs; 11th 20 hrs (marginalized-serving agencies); 12th 20 hrs with one agency. Counts for 5% of Religion grade.
St. John XXIIINot Published

Daily Mass

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

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
FrassatiNot Published
St. John XXIIINot Published

Service Hours by Grade

St. Catherine'sNot Published
FrassatiNot 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	Frassati Catholic High School	St. John XXIII College Preparatory
Tuition	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$24,050 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 Technology fee ($500) Registration ($300) Student activities ($400) Textbooks ($650) Charged separately: Application fee: $75–$125 Enrollment deposit (new families): $700 Athletics & Fine Arts fee: $250 (per sport/season) — 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	$3,000 off 2nd student; $9,425 off 3rd (tuition only)	2nd student $17,680 ($4,420 off)
Lower school on campus	Yes 14 months–12th (Montessori)	HS only	HS only
Open house	Not posted	Oct 28, 2026	Not posted
Required test	None	HSPT or ISEE Offered on campus: Jan 9, 2027 · Jan 23, 2027	ISEE
Application deadline	Jan 15, 2027	Not posted	Not posted
Decision date	Mar 5, 2027	Not posted	Not posted
Financial aid	Need-based	Need-based	Need-based + Merit
AP courses	Not posted	Not posted	Not posted
Enrollment	23	364	432
Student:Teacher	14.4:1	11:1	11.3:1
Mass	Monthly	Weekly Thursdays, 9:15 AM	Weekly Daily Mass also offered
Sports	6 sports	13 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.