The Explorers Home School Co-op, a Christian home school group, meets on Tuesdays in Ann Arbor. Explorers prides itself on offering a strong slate of academic and enrichment classes for all age groups. As a general rule, there are at least 3 different classes offered for every age level from age 4 through grade 12 in the morning program. In addition, students in grades 6-12 have an opportunity for an additional 6-8 class choices each hour in the afternoon. In all, Explorers offers between 90 and 100 classes each semester.