Located in Waterloo, Illinois, Gibault Catholic High School serves the Diocese of Belleville and is only 20 minutes from south St. Louis County. Our 40-acre campus is continually being updated to meet the needs of our students. 

Campus facilities include a gymnasium, weight room, renovated science labs, and a library. There is a chapel on site for small Masses, prayer services, or individual reflection. Our most unique features are our beautifully maintained patio areas, which students may use as outdoor study spaces.  Future renovations throughout our campus are being planned, including a STEM and Innovation Center.