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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.)
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.)
DuchesneISEE (Administered externally; campus tour + family interview also required)

World Languages

St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
St. ThomasFrench · Spanish · Mandarin · Latin
O'ConnellSpanish I-III · German (IV dual credit) · American Sign Language I-III
DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III

Dual Credit

St. Catherine'sNot Published
St. ThomasYes (4 dual-credit courses via University of St. Thomas)
O'ConnellYes (Via Galveston College: English III/IV, US History, Government, Spanish I/II, German IV (TSI test required))
DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)

AP Courses

St. Catherine'sNot Published
St. Thomas21 (40+ advanced/AP courses overall)
O'ConnellNot Published
Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)

Notable Programs

St. Catherine'sNot Published
St. ThomasNot Published
O'ConnellSTEAM electives: Robotics, Computer Science, Esports, Horticulture, Graphic Design; Honors Engineering I & II; A La Carte program for homeschoolers
DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement

Recommendations

St. Catherine'sNot Published
St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
O'ConnellNot Published
DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts

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
O'ConnellNot Published
DuchesneNot Published

Application Deadline

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

Honors Courses

St. Catherine'sNot Published
St. ThomasNot Published
O'ConnellNot Published
Duchesne12 (Called "Advanced" courses)

Learning Support

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

Commute from home

	St. Catherine's Montessori	St. Thomas High School	O'Connell College Preparatory School	Duchesne Academy of the Sacred Heart
Tuition	$20,560 2026-27 rate · 9th grade; grades 10-12: $20,753	$27,900 2026-27 rate	$9,100 2025-26 rate (newest published)	$33,600 2026-27 rate · Upper School
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	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 New Student Fee: $1,500 Enrollment deposit: $1,000 Technology fee (Grade 9): $2,600 Textbooks: $350 (approximate, Upper School) Grade 10 College Tour: $500 (grade 10) Graduation fee: $600 (seniors) Class trips: $175–$2,800 — optional AP exams: $100–$200 (per exam) — optional Athletics fee: $150–$300 (per sport) — optional
Sibling discount	10% off for each younger sibling	$2,000/yr per sibling after the first	Multi-student assistance available (amount not published)	Not Published
Lower school on campus	Yes 14 months–12th (Montessori)	HS only	HS only	Yes PK3–12
Open house	Not posted	Dec 6, 2026	Not posted	Nov 1, 2026
Required test	None	ISEE Offered on campus: Nov 14, 2026 · Jan 9, 2027	In-house placement test	ISEE
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 + Merit	Need-based + Merit
AP courses	Not posted	21	Not posted	20
Enrollment	23	791	80	300
Student:Teacher	14.4:1	9:1	4.5:1	8.1:1
Mass	Monthly	Monthly	Monthly	Not Published
Sports	6 sports	12 sports	13 sports	12 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.