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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

Dual Credit

St. ThomasYes (4 dual-credit courses via University of St. Thomas)
CathedralYes (University of St. Thomas partnership (est. June 2023))
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)

Entrance Exam

St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
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.)
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. ThomasFrench · Spanish · Mandarin · Latin
CathedralLatin I-IV · Greek I-II · Modern language elective (Years 3-4)
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

Recommendations

St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
CathedralMath, English + Administrator (HAIS forms); transcripts 3 prior years; student essay
O'ConnellNot Published
DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts

AP Courses

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

Learning Support

St. ThomasLearning Enrichment Center; college counseling with 4-year plan
CathedralLearning Enrichment Center — an individual learning plan for every student; tutoring, accommodations and testing support
O'ConnellNot Published
DuchesneNot Published

Notable Programs

St. ThomasNot Published
CathedralNot 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

Academic Model

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

Application Deadline

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

Family Interview

St. ThomasNot Published
CathedralYes (Family interview at the school — parents and student)
O'ConnellNot Published
DuchesneNot Published

Honors Courses

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

Commute from home

	St. Thomas High School	Cathedral High School	O'Connell College Preparatory School	Duchesne Academy of the Sacred Heart
Tuition	$27,900 2026-27 rate	$22,850 2026-27 rate	$9,100 2025-26 rate (newest published)	$33,600 2026-27 rate · Upper School
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 No itemized fees published.	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	$2,000/yr per sibling after the first	Not Published	Multi-student assistance available (amount not published)	Not Published
Lower school on campus	HS only	HS only	HS only	Yes PK3–12
Open house	Dec 6, 2026	Nov 7, 2026	Not posted	Nov 1, 2026
Required test	ISEE Offered on campus: Nov 14, 2026 · Jan 9, 2027	ISEE (or CLT for classical-school students)	In-house placement test	ISEE
Application deadline	Jan 15, 2027	Jan 15, 2027	Not posted	Not posted
Decision date	Mar 5, 2027	Not posted	Not posted	Not posted
Financial aid	Need-based + Merit	Need-based + Merit	Need-based + Merit	Need-based + Merit
AP courses	21	Not posted	Not posted	20
Enrollment	791	Not Published	80	300
Student:Teacher	9:1	Not Published	4.5:1	8.1:1
Mass	Monthly	Daily	Monthly	Not Published
Sports	12 sports	11 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.