St. John XXIII College Preparatory
Katy · On the Grand Parkway (SH-99), near I-10
1800 W. Grand Parkway N., Katy, TX 77449Map ↗Established 2001
About this information
$22,100
Tuition
9–12
Grades
432
Enrollment
11.3:1
Student–teacher
At a glance
An independent, co-ed Catholic college-preparatory school in Katy offering 15 AP courses, Latin through AP, and five Houses that organize student leadership, competition and community.
Advanced Academics
15 AP courses and 13 Honors courses, with 84% of 408 exams in 2025 scoring 3 or higher.
House System
Five Houses (Aquinas, Borromeo, Lisieux, Loreto, Neri) that compete for the Roncalli Cup and are led through House Student Government.
Latin Program
Latin is offered from Latin I through AP Latin, alongside Spanish through AP Spanish Language.
Service & Retreats
Students complete 100 service hours across four years and take part in mandatory day-long class retreats.
Tuition & financial aid
Tuition
$22,100
Estimated First-Year Required Cost
$22,600
TEFA (Texas Education Freedom Account)
Every family applying for tuition assistance must also apply for TEFA.
Payment options
Annual
Semi-annual
Monthly
May–Feb
Sibling discount
2nd student $17,680 ($4,420 off)
Need-based aid
Aid families also apply for TEFA, which doesn’t reduce school aid. Recipients complete volunteer hours by May 1: 40 for $6,000+ in aid, 25 for $2,000–5,999, 10 for under $2,000.
Merit scholarships
A merit scholarship for incoming students, based on academic excellence and entrance exam performance
Sources
Source last checked: Nov 10, 2026
Additional & conditional costs
Required and potential costs beyond published tuition
Mandatory freshman fees
Included in estimated first-year required cost
New Student Enrollment Fee
Optional / variable expenses
Not included in estimated first-year cost
Financial aid application fee
Sources
Source last checked: Nov 10, 2026
Admissions
Admissions Timeline
2027–28 cycle- Sep 1, 2026
Application Opens
- Nov 2, 2026
Financial Aid Application Opens
- Jan 15, 2027
Application Deadline
- Jan 31, 2027
Additional Forms Due
Financial Aid Application Deadline
- Mar 5, 2027
Decisions Released
What's required
Entrance exam: ISEE
Teacher recommendations
Official transcripts
Visits & Events
Sources
Source last checked: Nov 10, 2026
Academics
Advanced Coursework
15
AP Courses
13
Honors Courses
Grading
+1.0 (Honors or AP)
Class Ranking
Not RankedGraduation Requirements
28 total creditsSources
Accommodations
Extended time • Separate / small-group testing • Preferential seating • Note-taking support
Academic Support
Testing support • Academic coaching
Good to know
Additional fee of $1,100–$3,250 depending on the level of support. All students applying for Academic Support Services must have appropriate documentation. Space is limited, so accommodations may not be guaranteed for every request.
Sources
Source last checked: Nov 6, 2026
World Languages
Latin
Latin I • Latin II • Latin III • Latin IV • Latin V • Honors Latin I • Honors Latin II • AP Latin
Spanish
Spanish I • Spanish II • Spanish III • AP Spanish Language
Sources
Source last checked: Nov 3, 2026
College Prep
College Counseling
Dedicated College Counselor
College Planning
Naviance (Family Connection)
College outcomes · Class of 2025
100%
College Acceptance
$6M+
Scholarship Offers
Sources
Source last checked: Nov 3, 2026
Faith & community
Catholic identity
Archdiocese of Galveston-Houston
Independent Catholic — founded 2001, patron Pope St. John XXIII · Motto: "Parare Mente et Corde" (prepare in mind and heart)
Chapel
On campus
Mass & prayer
Weekly all-school Mass
Full Mass uniform required
Optional Daily Mass · Daily, year-round · Eucharistic adoration · Twice-yearly penance services · Daily Angelus
Retreats
Mandatory
Oboedientia, Pax, Virtus, Renovatio (mandatory day-long class retreats) · Optional multi-day overnight Kairos (jr/sr, held twice yearly) & optional weekend overnight Quest (fr/so, held twice yearly)
Sources
Source last checked: Nov 9, 2026
Athletics
TAPPS
League / Classification
13 sports offered
Varsity/interscholastic offerings
Football • Volleyball • Cross Country • Cheer • Dance • Baseball • Softball • Golf • Tennis • Track & Field • Basketball • Soccer • Swimming
Athletic Notables
State titles in Soccer, Swimming, Cross Country, and Track & Field
Sources
Source last checked: Nov 3, 2026
Arts
Band
Marching Band & Pep Band · one of only two schools in the Archdiocese with a marching band (started 2011 with 10 members, now 35) · performs at football games, pep rallies & concerts
Musical Theater
School musical productions staged as part of the Theatre program
Visual Arts
Painting, drawing, sculpture & ceramics · Art Club · National Art Honor Society
Theater / Drama
Musicals, plays & one-act productions · Drama Club · Open to students with no prior acting experience
Choir / Vocal
Mixed Choir (grades 9-12) · classical, sacred & popular repertoire
Sources
Source last checked: Nov 9, 2026
School life
Daily Life
Uniform
Uniform required; red or black logo sweater, vest or cardigan
Community Life
5 Houses
Aquinas, Borromeo, Lisieux, Loreto, Neri · Compete for the Roncalli Cup
Student Leadership
House Student Government
Lion Ambassadors
Sources
Source last checked: Nov 5, 2026
Clubs & Activities
25 activities across 7 categories
Special Interest
- Esports
- Table Top Gaming Club
- Ukulele Club
- Handbell Choir
- Comedy Sportz
- Art Club
- Boys Volleyball Club
- Roar Store Designers
Honor Societies
- National Honor Society
- National Science Honor Society
- Spanish National Honor Society ("Fray Luis de Leon" Chapter)
- National Art Honor Society
Academic
- Book Club
- Quiz Bowl
- Science Bowl
- Pre-Health Club
Cultural & Affinity
- International Club
- Polish Club
- Spanish Club
Faith & Ministry
- Altar Guild
- Altar Servers
- Girls in Grace Club
Service
- Key Club
- Treat People with Kindness
STEM & Robotics
- Robotics Club
Sources
Source last checked: Nov 3, 2026
About our dataInformation comes from official school sources. Availability reflects what we could verify from published materials.