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

World Languages

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

Dual Credit

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

Notable Programs

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

Recommendations

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

Academic Model

St. ThomasNot 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.)
O'ConnellNot Published
FrassatiNot Published

AP Courses

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

Application Deadline

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

Family Interview

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

Learning Support

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

Commute from home

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