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Academics

Entrance Exam

  • St. John XXIIIISEE (School code 570048; 9th grade. 11th/12th transfers submit PSAT. Last cycle: opened Sept 1, deadline Jan 15, docs Jan 31, rolling after.)
  • DuchesneISEE (Administered externally; campus tour + family interview also required)
  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)
  • St. Peter CTHSNone (No ISEE/HSPT. Inquiry → tour → FACTS application; English + Math recommendations + transcript. Last cycle: due Jan 15, decisions Mar 6, reply Mar 25.)

Dual Credit

  • St. John XXIIINot Published
  • DuchesneYes (University of St. Thomas partnership; online electives via SophieConnect + One Schoolhouse)
  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • St. Peter CTHSYes (Houston Community College partnership — pathway courses at St. Peter and two HCC campuses; school provides transport during the school day)

Recommendations

  • St. John XXIIITeacher recommendations (school forms) + official transcripts; interviews for transfers only
  • DuchesneEnglish and/or Math teacher + principal/head of school; 2 years transcripts
  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • St. Peter CTHSNot Published

World Languages

  • St. John XXIIISpanish (confirmed via Spanish NHS; full list not published)
  • DuchesneFrench (incl. Advanced IV-DELF B1) · Spanish (incl. AP) · American Sign Language I-III
  • St. ThomasFrench · Spanish · Mandarin · Latin
  • St. Peter CTHSNot Published

AP Courses

  • St. John XXIIINot Published
  • Duchesne20 (AP enrollment caps: soph 1 / jr 2 / sr 3; AP exam required if enrolled)
  • St. Thomas21 (40+ advanced/AP courses overall)
  • St. Peter CTHSNot Published

AP Program

  • St. John XXIIIAP and honors coursework offered (count not published; Course Selection Guide not public)
  • DuchesneNot Published
  • St. ThomasNot Published
  • St. Peter CTHSNot Published

Application Deadline

  • St. John XXIIINot Published
  • DuchesneNot Published
  • St. Thomas2027-01-15 (Opens Aug 3, 2026; supporting docs due Jan 31; rolling after)
  • St. Peter CTHSNot Published

Career & Technical Pathways

  • St. John XXIIINot Published
  • DuchesneNot Published
  • St. ThomasNot Published
  • St. Peter CTHSBusiness · Construction · Education · Information Technology · Health Sciences (The school describes itself as the first Catholic career and technical high school in Texas, and the second in the United States. Graduates earn a diploma plus a Level 1 industry certification, with a possible HCC associate degree and job placement with partner businesses.)

Honors Courses

  • St. John XXIIINot Published
  • Duchesne12 (Called "Advanced" courses)
  • St. ThomasNot Published
  • St. Peter CTHSNot Published

Learning Support

  • St. John XXIIINot Published
  • DuchesneNot Published
  • St. ThomasLearning Enrichment Center; college counseling with 4-year plan
  • St. Peter CTHSNot Published

Notable Programs

  • St. John XXIIINot Published
  • DuchesneRobotics and competitive debate programs; IT internship with Microsoft certification; junior Research Paper requirement
  • St. ThomasNot Published
  • St. Peter CTHSNot Published
Commute from home
Tuition
$22,100

2026-27 rate

$33,600

2026-27 rate · Upper School

$27,900

2026-27 rate

$15,000

2026-27 rate · most families pay far less after aid

What's included
Fees listed separately see fees
  • New Student Enrollment Fee: $500
  • Financial aid application (Clarity): $60 — 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
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.

Sibling discount2nd student $17,680 ($4,420 off)Not Published$2,000/yr per sibling after the firstNot Published
Lower school on campusHS only
Yes

PK3–12

HS onlyHS only
Open houseNot postedNov 1, 2026Dec 6, 2026Not posted
Required test
ISEE
ISEE
ISEE

Offered on campus: Nov 14, 2026 · Jan 9, 2027

None
Application deadlineNot postedNot postedJan 15, 2027Not posted
Decision dateNot postedNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based + Merit
Need-based + Merit
Need-based
AP coursesNot posted2021Not posted
Enrollment43230079126
Student:Teacher11.3:18.1:19:1Not Published
Mass
Weekly

Daily Mass also offered

Not Published
Monthly
Monthly
Sports13 sports12 sports12 sportsNot posted
Links

“Not posted” means the school hasn’t published it yet for this admissions cycle — check each school’s full profile for sources.