St. Thomas the Apostle Catholic School

Educating and Forming Saints.

Our Mission and Vision

A commitment to a Quality Catholic Education,
By Living and Sharing the Gospel of Jesus Christ.
Students will grow in wisdom and knowledge with their faith inspiring them in all subjects.
Teachers will prepare their students for this world, always with a faithful eye on the next.
Parents will embrace the promises they made for their children at Baptism,
(to be the first and best teachers in the ways of the faith of Jesus Christ).


About Us

St. Thomas the Apostle Catholic School is a private, Roman Catholic PK-8th grade school in Crystal Lake, Illinois, United States. St. Thomas is located in the Roman Catholic Diocese of Rockford. 

Our amazing programs include Spanish, Technology, Athletics, and many more!

Get started by checking out our transfer grant program, preschoolkindergarten, or get to know our Faculty and Staff!





Upcoming Events

15 April

11:30 am – 12:15 pm
Lunch Confessions
1:30 pm – 2:00 pm
Fr. Linkenheld to visit 1st Grade

16 April

12:30 pm – 1:00 pm
Fr. Fitzpatrick to visit Kindergarten

18 April

Fr. Linkenheld to visit 7th Grade

19 April

12:30 pm – 1:45 pm
1:00 pm – 1:45 pm
Fr. Bob to Visit 6th Grade

20 April

10:00 am – 11:30 am
First Holy Communion

26 April

12:30 pm – 1:00 pm
Fr. Bob to visit 2nd Grade