Washington Catholic is accredited by Advance-Ed and the Indiana Department of Education in correlation with the Diocese of Evansville, and is a member of the National Catholic Education Association and the Indiana Nonpublic Education Association. The State Board of Education, as well as the Diocese of Evansville, sets the policies regarding the standards expected in accredited schools, including teacher training and licensing, textbook adoption, curriculum, graduation requirements, length of instruction time, ISTEP, instructional media, and school building facilities.