Immaculate Conception, the only Catholic church in Kieler, was constructed in 1858. The church was remodeled in 1896, when a rock exterior and two front towers were added. A 2004 addition includes a large gathering area on the west side. Holy Ghost/Immaculate Conception School serves students in grades 4 through 8. Students in kindergarten through 3rd grade attend school in Dickeyville.