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Entrance Exam

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.)
St. Pius XISEE (School code 571082; 9th-grade applicants. Transfers submit PSAT/SAT/ACT. School offers an ISEE prep course. Application opens Sept 1.)

Academic Model

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.)
St. Pius XNot Published

Dual Credit

Learning Support

St. Catherine'sNot Published
CathedralLearning Enrichment Center — an individual learning plan for every student; tutoring, accommodations and testing support
St. Pius XPaul A. Gilliam '98 Learning for Success program — structured academic support ($2,500/yr)

Recommendations

St. Catherine'sNot Published
CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay
St. Pius XMath + English teachers, Principal/Counselor; student essay; transcripts

World Languages

St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)
St. Pius XNot Published

Family Interview

Honors & AP Courses

Notable Programs

St. Catherine'sNot Published
CathedralNot Published
St. Pius X"Engineer Your World I & II," Computer Science; electives in Business, Law, Psychology, Media Arts

Commute from home

	St. Catherine's Montessori	Cathedral High School	St. Pius X High School
Tuition	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$22,850 2026-27 rate	$22,850 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	Fees listed separately No itemized fees published.	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	10% off for each younger sibling	Not Published	Half tuition for a 3rd concurrently enrolled child
Lower school on campus	Yes 14 months–12th (Montessori)	HS only	HS only
Open house	Not posted	Nov 7, 2026	Not posted
Required test	None	ISEE (or CLT for classical-school students)	ISEE
Application deadline	Jan 15, 2027	Jan 15, 2027	Not posted
Decision date	Mar 5, 2027	Not posted	Not posted
Financial aid	Need-based	Need-based + Merit	Need-based + Merit
AP courses	Not posted	Not posted	Not posted
Enrollment	23	Not Published	655
Student:Teacher	14.4:1	Not Published	7:1
Mass	Monthly	Daily	Monthly
Sports	6 sports	11 sports	14 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.