Discover the Difference of Catholic Education


St. John XXIII Catholic School

St. John XXIII Catholic School (SJ23) provides a foundation of Catholic values and academic excellence for its students in preschool through 8th grade. Our faculty and staff are dedicated to building a strong academic, social, emotional, and spiritual foundation for our students.

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“I am beyond grateful for what St. John XXIII and the entire staff has done for my family. My kids would not be in the places they are if it weren’t for the dedication and love of the teachers and staff. THANK YOU ALL.”

– Current Parent


Choosing the right educational option for your child is one of the most important decisions you will make. It’s important that your child’s school is an educational partner with like-minded values and goals, dedicated to helping your child reach his or her social, emotional, intellectual, physical, and spiritual potential. If you are interested in becoming part of our school community, we welcome you to explore now through our 3D Virtual Tour, or contact us to schedule an in-person tour or shadow day.



Clubs evolve and change based on student interests and parent enthusiasm. For this school year, Clubs meet from 3:30-4:30 PM and will be held in two sessions.

2023-2024 Clubs Include:
Watercolor Painting
Construction Club
Sign Language
Outdoor Neighborhood Games
Coding Club


Why St. John XXIII Catholic School?

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All students contribute to our school in ways big and small. Today, we celebrate YOU.
Congratulations to the following students on receiving the “Living out our School Mission” Awards! These awards are given to students who go above & beyond in the following areas: Serving, Learning, ...Loving & Leading. Keep up the great work!

It's National School Library Week! 📚

- Students visit the Library every Wednesday and begin with story time. Before they go back to class, each student gets to choose a book to take home!
- Our Library is used for student intervention, and ...Middle School students meet in the library weekly. It's a beautiful and cozy place for all ages!
- We host a yearly Scholastic Book Fair that everyone looks forward to. The funds replenish the library and buy books for the classrooms, including yearly best sellers and award winning books!
- The Library also supports our classroom teachers with books for special events and projects.

We are blessed to have two Librarians, Mrs. McAffee and Miss Emily. If you see them, please thank them this week for their dedication to our school and their love for reading!

We promise...the sunshine WILL come back! ☀️ Get your pre-orders in for the SJ23 Flower Sale and be prepared! Completed order forms can be placed in the drop-box at the main school entrance, or mailed to: 1802 N Wisconsin Street | Port Washington, WI
DON'T FORGET...WE DELIVER IF YOU ...PRE-ORDER! For catalogs and order forms, visit:
*Pre-Oder Form Deadline: April 10, 2024 🌻

Our school is honored and so excited to be part of the Paint on Port Murals for Port Washington! Our students will be part of the beautiful legacy and we encourage all of our school families to join the celebration this summer as they reveal their masterpiece. 🖌️❣️Thank you to Mrs. Sherri... Kultgen and all of the wonderful volunteers for joining us this morning and sharing such a special piece of our hometown history with our students.
*Port Washington Main Street, in collaboration with the City of Port Washington, launched a three-year mural program to bring 10+ murals to our city between 2023 and 2025. Port Washington has a rich art history, and we are excited to use public art to add vibrancy to our downtown and our city while paying homage to its history and character.
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