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Cathedral Cristo Rey Duchesne Frassati Incarnate Word O'Connell St. Agnes St. Catherine's St. John XXIII St. Peter CTHS St. Pius X St. Thomas Strake Jesuit

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Academics College Counseling Athletics Faith & Service Student Life Arts Daily Life Student Support College Outcomes Cost & Financial Aid

Academics

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.)
St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
FrassatiHSPT or ISEE (Either test is accepted. On-campus HSPT: Jan 9 + Jan 23, 2027. ERB member 571107. Transfers may substitute PSAT.)
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.)

World Languages

St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
St. ThomasFrench · Spanish · Mandarin · Latin
FrassatiFrench (through AP; Bordeaux/Lourdes exchange) · Spanish (through AP)
O'ConnellSpanish I-III · German (IV dual credit) · American Sign Language I-III

Dual Credit

St. Catherine'sNot Published
St. ThomasYes (4 dual-credit courses via University of St. Thomas)
FrassatiYes (University of St. Thomas (one course/yr) + Catholic University of America (entrepreneurship))
O'ConnellYes (Via Galveston College: English III/IV, US History, Government, Spanish I/II, German IV (TSI test required))

Notable Programs

St. Catherine'sNot Published
St. ThomasNot Published
FrassatiPhysics-first science sequence; Ethics & Culture department; House System
O'ConnellSTEAM electives: Robotics, Computer Science, Esports, Horticulture, Graphic Design; Honors Engineering I & II; A La Carte program for homeschoolers

Recommendations

St. Catherine'sNot Published
St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
Frassati3 — Principal/Counselor, English, Math (via FACTS); transcripts 6th-8th
O'ConnellNot Published

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.)
St. ThomasNot Published
FrassatiNot Published
O'ConnellNot Published

AP Courses

St. Catherine'sNot Published
St. Thomas21 (40+ advanced/AP courses overall)
FrassatiNot Published
O'ConnellNot Published

Application Deadline

St. Catherine'sNot Published
St. Thomas2027-01-15 (Opens Aug 3, 2026; supporting docs due Jan 31; rolling after)
FrassatiNot Published
O'ConnellNot Published

Family Interview

St. Catherine'sNot Published
St. ThomasNot Published
FrassatiYes (~30 min, student + parents with faculty — Jan 23 (8am-3pm) or Jan 28 (3-5pm), 2027; signups Nov 2026.)
O'ConnellNot Published

Learning Support

St. Catherine'sNot Published
St. ThomasLearning Enrichment Center; college counseling with 4-year plan
FrassatiNot Published
O'ConnellNot Published

Commute from home

	St. Catherine's Montessori	St. Thomas High School	Frassati Catholic High School	O'Connell College Preparatory School
Tuition	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$27,900 2026-27 rate	$24,050 2026-27 rate	$9,100 2025-26 rate (newest published)
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	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 Registration fee: $450 Technology fee: $200 Sports fee: $150–$250 (per sport ($450 all-season package)) — optional
Sibling discount	10% off for each younger sibling	$2,000/yr per sibling after the first	$3,000 off 2nd student; $9,425 off 3rd (tuition only)	Multi-student assistance available (amount not published)
Lower school on campus	Yes 14 months–12th (Montessori)	HS only	HS only	HS only
Open house	Not posted	Dec 6, 2026	Oct 28, 2026	Not posted
Required test	None	ISEE Offered on campus: Nov 14, 2026 · Jan 9, 2027	HSPT or ISEE Offered on campus: Jan 9, 2027 · Jan 23, 2027	In-house placement test
Application deadline	Jan 15, 2027	Jan 15, 2027	Not posted	Not posted
Decision date	Mar 5, 2027	Mar 5, 2027	Not posted	Not posted
Financial aid	Need-based	Need-based + Merit	Need-based	Need-based + Merit
AP courses	Not posted	21	Not posted	Not posted
Enrollment	23	791	364	80
Student:Teacher	14.4:1	9:1	11:1	4.5:1
Mass	Monthly	Monthly	Weekly Thursdays, 9:15 AM	Monthly
Sports	6 sports	12 sports	13 sports	13 sports
Links	Full profile Admissions	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.