2023-2024 Applications are now open.

Please email Admissions if you have any questions, admissions.
  • The ISEE Entrance Exam is the only exam accepted for the 2023-2024 school year.
  • St. John XXIII will offer the ISEE on our campus 8:00 a.m. - Noon
         Saturday, November 5, 2022; Event Code - SPL5MV6L 
         Saturday, January 7, 2023; Event Code - 6XPZELR5
Please make sure you register in advance at, School code - 570048.


Teacher recommendations are required for admission consideration.  Print the forms and present them to your child's teacher for completion. Forms are located under “Application Forms" on the right-hand side of this page. 

Please print the records release form and submit it to relevant school(s) for completion.  Forms are located under "Application Forms" on the right-hand side of this page. Accredited transcripts are required

We offer three levels of academic support. For more information, click here.

We offer academic scholarships based on a specific criterion. These scholarships are based upon St. John XXIII receiving the following: a submitted online application, ISEE scores, transcript including first semester of current year, Teacher Recommendations, and a completed online scholarship application.
To apply for a scholarship, please complete this Online Scholarship form.  
    The scholarship application form needs to be completed no later than January 15, 2023. 
    Tours and inquiries: Campus tours are conducted by appointment.

    To submit an inquiry and/or schedule a tour
    : Click HERE

    Notice of Nondiscriminatory Policy As To Students: 

    St. John XXIII College Preparatory admits students of any race, color, national and ethnic origin to all the rights, privileges, programs, and activities generally accorded or made available to students at the school. It does not discriminate on the basis of race, color, national and ethnic origin in administration of its educational policies, admissions policies, scholarship and loan programs, and athletic and other school-administered programs. 

    St. John XXIII College Preparatory

    1800 W. Grand Parkway N. | Katy, Texas 77449
    p 281.693.1000
    f 281.693.1001
    Our Mission
    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.