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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. Peter CTHSNone (No ISEE/HSPT. Inquiry → tour → FACTS application; English + Math recommendations + transcript. Last cycle: due Jan 15, decisions Mar 6, reply Mar 25.)
  • St. ThomasISEE (School code 571055; freshmen. Transfers: ISEE or PSAT.)

Dual Credit

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

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. Peter CTHSNot Published
  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8

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. Peter CTHSNot Published
  • St. ThomasFrench · Spanish · Mandarin · Latin

AP Courses

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

AP Program

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

Application Deadline

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

Career & Technical Pathways

  • St. John XXIIINot Published
  • DuchesneNot 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.)
  • St. ThomasNot Published

Honors Courses

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

Learning Support

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

Notable Programs

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

2026-27 rate

$33,600

2026-27 rate · Upper School

$15,000

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

$27,900

2026-27 rate

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
Fees listed separately

No itemized fees published.

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

PK3–12

HS onlyHS only
Open houseNot postedNov 1, 2026Not postedDec 6, 2026
Required test
ISEE
ISEE
None
ISEE

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

Application deadlineNot postedNot postedNot postedJan 15, 2027
Decision dateNot postedNot postedNot postedMar 5, 2027
Financial aid
Need-based + Merit
Need-based + Merit
Need-based
Need-based + Merit
AP coursesNot posted20Not posted21
Enrollment43230026791
Student:Teacher11.3:18.1:1Not Published9:1
Mass
Weekly

Daily Mass also offered

Not Published
Monthly
Monthly
Sports13 sports12 sportsNot posted12 sports
Links

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