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Entrance Exam

St. John XXIIIISEE (School code 570048; 9th grade. 11th/12th transfers submit PSAT. Last cycle: opened Sept 1, deadline Jan 15, docs Jan 31, rolling after.)
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.)
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.)

World Languages

St. John XXIIISpanish (confirmed via Spanish NHS; full list not published)
St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)

Academic Model

St. John XXIIINot 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.)
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.)

Recommendations

St. John XXIIITeacher recommendations (school forms) + official transcripts; interviews for transfers only
St. Catherine'sNot Published
CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay

AP Program

St. John XXIIIAP and honors coursework offered (count not published; Course Selection Guide not public)
St. Catherine'sNot Published
CathedralNot Published

Dual Credit

Family Interview

Learning Support

St. John XXIIINot Published
St. Catherine'sNot Published
CathedralLearning Enrichment Center — an individual learning plan for every student; tutoring, accommodations and testing support

Commute from home

	St. John XXIII College Preparatory	St. Catherine's Montessori	Cathedral High School
Tuition	$22,100 2026-27 rate	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$22,850 2026-27 rate
What's included	Fees listed separately see fees New Student Enrollment Fee: $500 Financial aid application (Clarity): $60 — 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 No itemized fees published.
Sibling discount	2nd student $17,680 ($4,420 off)	10% off for each younger sibling	Not Published
Lower school on campus	HS only	Yes 14 months–12th (Montessori)	HS only
Open house	Not posted	Not posted	Nov 7, 2026
Required test	ISEE	None	ISEE (or CLT for classical-school students)
Application deadline	Not posted	Jan 15, 2027	Jan 15, 2027
Decision date	Not posted	Mar 5, 2027	Not posted
Financial aid	Need-based + Merit	Need-based	Need-based + Merit
AP courses	Not posted	Not posted	Not posted
Enrollment	432	23	Not Published
Student:Teacher	11.3:1	14.4:1	Not Published
Mass	Weekly Daily Mass also offered	Monthly	Daily
Sports	13 sports	6 sports	11 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.