School Calendar

  • Event Categories


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    Labor Day Holiday | No Classes

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    Parent Homecoming 101

    8:15 am
    Location: 2nd Art Room -In Student Center (to left of stage)
     
    All you need to know about HOMECOMING at SJ23!
    • This event will provide a great opportunity for you to get all your Homecoming-related questions answered. Whether you have inquiries about mums and garters, dresses, or any other aspect of the event, this is the place to be.
    • Homecoming is all about tradition and having fun. It's a time to celebrate school spirit, reconnect with friends, and enjoy the festivities. Be prepared to hear about the unique traditions that make Homecoming at SJ23 special.
    • click here for Homecoming Guidelines
    • click here for Dance Guest Form
    Sponsored by the Parent Association
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    Parent Coffee with the Principal - Class of 2026

    Join us in the Student Center - Roar Store hallway - at 8:15 a.m. for coffee with Mr. Noonan
  3. 19
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    School Picture Retakes

  5. 21

    Time to Break Ground!

    Time to Break Ground! 
    Please join us on September 21 at 7 pm 
    for a Groundbreaking of our new addition to the original gym. 
    Please RSVP at https://sj23.info/BreakGround
     
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    Freshman parent meeting

    Monday, September 25 at 6:00 p.m. in the Student Center
    "Transition into High School"
    • Students are encouraged to attend.
    • Academics, Support, and Tips for Success

    Parent Coffee with the Principal - Class of 2027

    Join us in the student center - Roar Store hallway - at 8:15 a.m. for coffee with Mr. Noonan.
  3. 26

    Freshman Retreat

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