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Daily Life

Enrollment (federal data)

  • St. John XXIII432 (NCES PSS 2023-24. Katy campus.)
  • St. Catherine's23 (Grades 9-12 (NCES 2023-24: 7/8/6/2); campus total ~265 (14 months-12th).)
  • St. Peter CTHSNot Published

Dress Code

  • St. John XXIIISue Mills uniforms; red or black logo sweater/vest/cardigan
  • St. Catherine'sNot Published
  • St. Peter CTHSNot Published

Enrollment (school-reported)

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. Peter CTHS26 (2024-25 (15 freshmen + 11 sophomores), growing one grade/year — first senior class 2026-27. Founded 2022; too new for an NCES record.)

Full Campus

  • St. John XXIIINot Published
  • St. Catherine's14 months - 12th grade (coed); Adolescent Community gr 7-9; High School gr 10-12 (launched 2017)
  • St. Peter CTHSNot Published

School Day

  • St. John XXIIINot Published
  • St. Catherine's8:00 AM - 3:45 PM (extended care available)
  • St. Peter CTHSNot Published

Student–Teacher Ratio (federal data)

  • St. John XXIII11.3:1 (NCES 2023-24: 432 / 38.1 FTE)
  • St. Catherine'sNot Published
  • St. Peter CTHSNot Published

Transportation

  • St. John XXIIINot Published
  • St. Catherine'sNot Published
  • St. Peter CTHSSchool transports students to HCC campuses during the school day (home transport not published)
Commute from home
Tuition
$22,100

2026-27 rate

$20,560

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

$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
  • Application fee: $150
  • Tuition deposit: $750
  • New Student Fee: $850
  • Facility fee: $800
  • Program fee: $2,500–$2,750
Fees listed separately

No itemized fees published.

Sibling discount2nd student $17,680 ($4,420 off)10% off for each younger siblingNot Published
Lower school on campusHS only
Yes

14 months–12th (Montessori)

HS only
Open houseNot postedNot postedNot posted
Required test
ISEE
None
None
Application deadlineNot postedJan 15, 2027Not posted
Decision dateNot postedMar 5, 2027Not posted
Financial aid
Need-based + Merit
Need-based
Need-based
AP coursesNot postedNot postedNot posted
Enrollment4322326
Student:Teacher11.3:114.4:1Not Published
Mass
Weekly

Daily Mass also offered

Monthly
Monthly
Sports13 sports6 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.