St. John XXIII College Preparatory, located in Katy, Texas, was founded in 2004 and is a competitive, coeducational, college preparatory high school of 408 students from Katy, Sugar Land, Cypress, Spring, Richmond, Rosenberg, Memorial, Fulshear, and Spring Branch. Thirty-six teaching faculty are employed, with 50% holding master`s degrees or above. The class of 2022 received more than $11 million in scholarships, accumulated more than 10,000 service hours, and had a 100% college acceptance rate. .
Quick Stats (2025)
- Top Ranked TX School
- Grades: 9-12
- Enrollment: 409 students
- Yearly Tuition: $19,750
- Acceptance rate: 100%
- Average class size: 18 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
St. John XXIII College Preparatory ranks among the top 20% of private schools in Texas for:
Category
Attribute
SAT Score
ACT Score
Student Body
Sports offered
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades 9-12
ADD/ADHD Support
Yes
Learning Difference Programs
Yes
Year Founded
2001
Colors
Crimson, Gold
First Day of School
Fri. Aug 15, 2025
Student Body
Total Students
409 students
Student Body Type
Co-ed
% Students of Color
23%
State avg.: 41%
Students by Grade

Academics and Faculty
Total Classroom Teachers
36 teachers
Student : Teacher Ratio
11:1
National avg.: 13:1
% Faculty w/Advanced Degree
50%
Average Class Size
18 students
Number of AP Courses
15 courses
List of Courses Offered
Average SAT score
1400
(Out of 1600)
Average ACT score
32
(Out of 36)
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Pants, shirts, skirts, polos
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
$19,750
Tuition Notes
2023-2024 Tuition $19,750
2nd Student Tuition $15,800
Returning Student Re-Enrollment Fee (2/15 - 3/31) $500
Returning Student LATE Re-Enrollment (After 3/31) $600
New Student Enrollment $500
Acceptance Rate
100%
National avg.: 81%
Admissions Director
Preston Smith
Admissions Associate
Anne Marie Noonan
Application URL
Sports
Total Sports Offered
16 sports
Sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
7 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Arts and Music Programs:
Bell Choir
Arts and Music Programs:
Art, Band, Choir, Comedy Sportz, Guitar Ensemble, Theater Arts
School Notes
- School Motto: Parare Mente et Corde
- School Mascot: Lion
- St. John XXIII College Preparatory forms the hearts and minds of young men and women in a Christ-centered community dedicated to academic excellence, the pursuit of virtue, and service to others in the Tradition of the Catholic Church.
Source: Verified school update
Frequently Asked Questions
How much does St. John XXIII College Preparatory cost?
St. John XXIII College Preparatory's tuition is approximately $19,750 for private students.
What is the acceptance rate of St. John XXIII College Preparatory?
The acceptance rate of St. John XXIII College Preparatory is 100%, which is higher than the national average of 83%.
What sports does St. John XXIII College Preparatory offer?
St. John XXIII College Preparatory offers 16 interscholastic sports: Baseball, Basketball, Cheering, Cross Country, Dance, Diving, Drill Team, Football, Golf, Soccer, Softball, Swimming, Tennis, Track and Field, Volleyball and Winter Track. St. John XXIII College Preparatory is ranked as one of the top 20% of private schools in Texas for most sports offered.
What is St. John XXIII College Preparatory's ranking?
St. John XXIII College Preparatory ranks among the top 20% of private schools in Texas for: Highest average SAT score, Highest average ACT score, Largest student body and Most sports offered.
When is the application deadline for St. John XXIII College Preparatory?
The application deadline for St. John XXIII College Preparatory is rolling (applications are reviewed as they are received year-round).
School Calendar
View the St. John XXIII College Preparatory yearly calendar below. Note key dates such as:
Event
Date
First day of classes | Second Semester
January 07, 2026 (Wednesday)
Spring Break
March 09, 2026 (Monday)
Spring Break
March 10, 2026 (Tuesday)
Spring Break
March 11, 2026 (Wednesday)
Spring Break
March 12, 2026 (Thursday)
School Reviews
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- Quality of academic programs, teachers, and facilities
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