Catholic high schools in O'fallon, MO
1 Roman Catholic school serves high-school grades in O'fallon. Use the school pages below for location, grade range, enrollment, and verified HSPT information where available.
O'fallon Catholic school overview
- Schools
- 1 serving high-school grades
- Students listed
- 1,087 across 1 school reporting enrollment
- Average enrollment
- 1,087 students among schools with published NCES enrollment
- Grade ranges
- 9-12
- County
- ST. Charles
- Verified HSPT guides
- 0
Planning a Catholic high school application
Entrance-test rules are set by the school or diocese and can differ even within the same city. Check each school’s admissions site before registering. If a school is confirmed in our HSPT guide, its directory page links directly to the current admissions and preparation notes.
- Confirm whether each school requires the HSPT or another entrance test for the current cycle.
- Record application, transcript, recommendation, financial-aid, and scholarship deadlines separately.
- Ask whether one HSPT sitting can be shared with other schools in the same diocese.
- Compare the daily commute as well as tuition, aid, academic programs, and school size.
Explore Catholic high schools near O'fallon
Questions about Catholic high schools in O'fallon
How many Catholic high schools are in O'fallon, MO?
NCES lists 1 Roman Catholic school in O'fallon that include grade 9. The directory uses 2023–24 school data.
Do Catholic high schools in O'fallon require the HSPT?
We do not currently have a source-reviewed HSPT record for a school in O'fallon. Catholic affiliation alone does not establish which entrance test a school requires.
What should families compare between Catholic high schools in O'fallon?
Compare grade range, commute, enrollment size, admissions deadlines, entrance-test policy, tuition and aid, academic programs, student support, and whether test scores affect scholarship consideration.
Compare the full statewide list of Catholic high schools in Missouri.
Source: NCES Private School Locator 2023–24. Inclusion does not establish that a school uses the HSPT.
Applying to a Catholic high school in O'fallon?
Use the free diagnostic to establish an HSPT baseline before deciding how much preparation is necessary.