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Entrance Exam

O'ConnellIn-house placement test (No ISEE/HSPT — 30-60 min Math & Reading placement test, offered Mon-Thu 8:30-2:30. Rolling admissions, no published deadlines.)
St. Pius XISEE (School code 571082; 9th-grade applicants. Transfers submit PSAT/SAT/ACT. School offers an ISEE prep course. Application opens Sept 1.)
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.)

Dual Credit

O'ConnellYes (Via Galveston College: English III/IV, US History, Government, Spanish I/II, German IV (TSI test required))
St. Pius XYes (Via college partnerships (institutions not named))
St. Catherine'sNot Published

Notable Programs

O'ConnellSTEAM electives: Robotics, Computer Science, Esports, Horticulture, Graphic Design; Honors Engineering I & II; A La Carte program for homeschoolers
St. Pius X"Engineer Your World I & II," Computer Science; electives in Business, Law, Psychology, Media Arts
St. Catherine'sNot Published

World Languages

O'ConnellSpanish I-III · German (IV dual credit) · American Sign Language I-III
St. Pius XNot Published
St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships

Academic Model

O'ConnellNot Published
St. Pius XNot 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.)

Honors & AP Courses

Learning Support

O'ConnellNot Published
St. Pius XPaul A. Gilliam '98 Learning for Success program — structured academic support ($2,500/yr)
St. Catherine'sNot Published

Recommendations

O'ConnellNot Published
St. Pius XMath + English teachers, Principal/Counselor; student essay; transcripts
St. Catherine'sNot Published

Commute from home

	O'Connell College Preparatory School	St. Pius X High School	St. Catherine's Montessori
Tuition	$9,100 2025-26 rate (newest published)	$22,850 2026-27 rate	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753
What's included	Fees listed separately see fees Registration fee: $450 Technology fee: $200 Sports fee: $150–$250 (per sport ($450 all-season package)) — optional	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	Fees listed separately see fees Application fee: $150 Tuition deposit: $750 New Student Fee: $850 Facility fee: $800 Program fee: $2,500–$2,750
Sibling discount	Multi-student assistance available (amount not published)	Half tuition for a 3rd concurrently enrolled child	10% off for each younger sibling
Lower school on campus	HS only	HS only	Yes 14 months–12th (Montessori)
Open house	Not posted	Not posted	Not posted
Required test	In-house placement test	ISEE	None
Application deadline	Not posted	Not posted	Jan 15, 2027
Decision date	Not posted	Not posted	Mar 5, 2027
Financial aid	Need-based + Merit	Need-based + Merit	Need-based
AP courses	Not posted	Not posted	Not posted
Enrollment	80	655	23
Student:Teacher	4.5:1	7:1	14.4:1
Mass	Monthly	Monthly	Monthly
Sports	13 sports	14 sports	6 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.