St. Thomas the Apostle School
265 King St., Crystal Lake, IL 60014Open, per Google (checked Oct 2, 2026)
St. Thomas the Apostle School is a Roman Catholic private school in Crystal Lake, IL teaching grades PreK-8. It reported 164 students and about 9.1 students for every teacher in the 2023-24 federal survey.
School facts
- Grades
- PreK-8
- Students
- 164
- Teachers
- 20
- Students per teacher
- 9.1
- Student body
- Coeducational
- Program
- Regular
- Affiliation
- Roman Catholic
- Setting
- Suburb
These are the numbers the school gave the U.S. Department of Education for the 2023-24 school year, published in July 2026. The survey counts students in kindergarten to grade 12, not pre-K. Enrollment and staffing move every year, so ask the school for today’s figures. Where this comes from. Something wrong? Tell us and we will fix it.
St. Thomas the Apostle School tuition
We have not verified a tuition figure for St. Thomas the Apostle School yet. Every private school sets its own price and most share it on request: ask for the full-year tuition for your child’s grade plus required fees, or look for a tuition page on the school’s website.
Other private schools nearby
| School | Grades | Students | Miles |
|---|---|---|---|
| Immanuel Lutheran School | PreK-8 | 232 | <1 |
| Montessori Pathways School | PreK-6 | 22 | 1 |
| Lord & Savior Lutheran School & Preschool | PreK-3 | 8 | 3 |
| Crystal Lake Montessori School | PreK-8 | 76 | 4 |
| Ss Peter & Paul School | PreK-8 | 167 | 5 |
| Primrose School of Algonquin | PreK-K | 10 | 5 |
| St. Margaret Mary Catholic School | PreK-8 | 166 | 5 |
| Trinity Oaks Christian Academy | PreK-12 | 268 | 6 |
Private schools
Keep looking
- All private schools near Crystal Lake
- Catholic schools in Illinois
- Private elementary schools in Illinois
- Private middle schools in Illinois
- Private schools with kindergarten in Illinois
- Private schools with pre-K in Illinois
- Private schools in McHenry County
- School choice in Illinois: what is available
- Compare schools side by side
Do you run this school?
Fix anything that is off, and add what families ask us for most: tuition, open seats by grade, and photos. It is free.
Update this listingGet one email when applications open
Most programs open once a year, and several ran out of money or seats in 2026. Pick your state and we will email you the day the next window opens, with the official link. That is the only email you get.
One email per application window. No calls, no sharing your details.