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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.)
  • 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.)
  • 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. John XXIIISpanish (confirmed via Spanish NHS; full list not published)
  • St. Catherine'sSpanish · Latin/French/ASL/Portuguese via independent study & university partnerships
  • St. ThomasFrench · Spanish · Mandarin · Latin
  • FrassatiFrench (through AP; Bordeaux/Lourdes exchange) · Spanish (through AP)

Recommendations

  • St. John XXIIITeacher recommendations (school forms) + official transcripts; interviews for transfers only
  • St. Catherine'sNot Published
  • St. ThomasMath + English teachers (HAIS forms, after Dec 1); student statement + resume; report cards gr 6-8
  • Frassati3 — Principal/Counselor, English, Math (via FACTS); transcripts 6th-8th

Dual Credit

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. ThomasYes (4 dual-credit courses via University of St. Thomas)
  • FrassatiYes (University of St. Thomas (one course/yr) + Catholic University of America (entrepreneurship))

Academic Model

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

AP Courses

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. Thomas21 (40+ advanced/AP courses overall)
  • FrassatiNot Published

AP Program

  • St. John XXIIIAP and honors coursework offered (count not published; Course Selection Guide not public)
  • St. Catherine'sNot Published
  • St. ThomasNot Published
  • FrassatiNot Published

Application Deadline

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

Family Interview

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

Learning Support

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. ThomasLearning Enrichment Center; college counseling with 4-year plan
  • FrassatiNot Published

Notable Programs

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. ThomasNot Published
  • FrassatiPhysics-first science sequence; Ethics & Culture department; House System
Commute from home
Tuition
$22,100

2026-27 rate

$20,560

2026-27 rate · 9th grade; grades 10-12: $20,753

$27,900

2026-27 rate

$24,050

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
  • 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
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 discount2nd student $17,680 ($4,420 off)10% off for each younger sibling$2,000/yr per sibling after the first$3,000 off 2nd student; $9,425 off 3rd (tuition only)
Lower school on campusHS only
Yes

14 months–12th (Montessori)

HS onlyHS only
Open houseNot postedNot postedDec 6, 2026Oct 28, 2026
Required test
ISEE
None
ISEE

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

HSPT or ISEE

Offered on campus: Jan 9, 2027 · Jan 23, 2027

Application deadlineNot postedJan 15, 2027Jan 15, 2027Not posted
Decision dateNot postedMar 5, 2027Mar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based
Need-based + Merit
Need-based
AP coursesNot postedNot posted21Not posted
Enrollment43223791364
Student:Teacher11.3:114.4:19:111:1
Mass
Weekly

Daily Mass also offered

Monthly
Monthly
Weekly

Thursdays, 9:15 AM

Sports13 sports6 sports12 sports13 sports
Links

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