St. John Xxiii College Prreparatory
Independent Catholic school · Grades 9–12
Katy, TX
1800 W Grand Pkwy N, Katy, TX 77449
Overall grade: A+
ChooseAPrivateSchool.com grade, from official facts compared with similar schools.
- A-Class size
- ACollege-going
- B+Years serving families
- ADiversity
What stands out
- 100% of graduates go to four-year colleges
- Growing: enrollment up 17% since 2011–12
- Serving families in Katy since at least 2011
St. John Xxiii College Prreparatory is an independent Catholic school in Katy, Texas, for students from 9th grade through 12th grade. It has about 432 students and around 11 students per teacher. Enrollment has grown about 17% since 2011–12. The school is part of the Diocese of Galveston-Houston. The school reports that about 100% of its graduates go on to four-year colleges. Students attend about 7 hours a day, 189 days a year. Texas has programs that can help pay tuition; ask the school whether it takes part.
At a glance
- Grades
- Grades 9–12
- Students
- 432
- Teachers
- 38.1 (full-time equivalent)
- Students per teacher
- 11.3
- Boys and girls
- Coed · 243 girls, 189 boys
- Religious affiliation
- Catholic · Independent Catholic school
- Diocese
- Diocese of Galveston-Houston
- School day
- About 7 hours
- School year
- 189 days
- Graduates going to 4-year colleges
- About 100% (the school's estimate for the class before the survey)
- Library
- Yes
Reviews
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How it compares
- Smaller classes than 50% of Catholic high schools in Texas (11 students per teacher).
- Larger than 66% of Catholic high schools in Texas.
- Compared with 32 Catholic high schools in Texas.
Students by survey year
Total students reported in official records since 2011–12.
Students by grade
Student body
Help paying tuition in Texas
These state programs can help pay private school tuition. Only participating schools can accept them, so ask St. John Xxiii College Prreparatory whether it takes part.
- Texas Education Freedom Accounts (TEFA) · Education savings account
Questions to ask on a tour
- What is tuition, and what does it include (books, fees, uniforms, trips)?
- Do you offer financial aid, sibling discounts or payment plans?
- Do you accept ESA, voucher or tax-credit scholarship funds?
- How big are classes in my child's grade?
- What support is there for students who need extra help or more challenge?
- Is the school accredited, and by whom?
- What do a typical day and a typical week look like?
- How does the school communicate with families?
Questions about St. John Xxiii College Prreparatory
What grades does St. John Xxiii College Prreparatory serve?
St. John Xxiii College Prreparatory serves grades 9–12.
How many students attend St. John Xxiii College Prreparatory?
About 432 students, with 11 students per teacher, according to official records.
How much is tuition at St. John Xxiii College Prreparatory?
Call the school to ask about tuition, financial aid and payment plans. Texas has programs that can help pay private school tuition; ask whether the school takes part.
Official record · Updated October 2026 · Official search · Something wrong? Tell us
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