Assumption Catholic School
203 West Third Street
O'Fallon, MO 63366-1609
Phone: 636-240-4474 Fax:
Manage Tuition Payments
School Office Summer Hours: Tuesday, Wednesday and Thursday 8:00am - 1:00pm
PSR and Montessori Summer Hours: Tuesday, Wednesday and Thursday 9:00am - 4:00pm Assumption - Sponsors
To become a sponsor for Assumption please contact your school office.