|Wisconsin compulsory attendance law requires that all children, ages 6-17 (inclusive), must attend a public, private, or home school. WIS. STAT. § 118.15
WIS. STAT. § 118.155 expressly allows school boards to permit students to be absent from school in order to obtain religious instruction. Several conditions must be satisfied including:
1. Students must have the written permission of their parents in order to be released. 2. Students must be released for at least 60 minutes but not more than 180 minutes per religious instruction. 3. Religious instruction must be off the public school premises. 4. The supervisor of such religious instruction must report monthly, to the public school principal, the names of the students who attended the religious instruction.
The school board, however may deny the privilege of Released Time to students who absent themselves from such religious instruction after requesting the privilege. The school board also has the discretionary authority to determine the time periods to be allotted students for Released Time.
All transportation involved in Released Time attendance shall be the responsibility of the parents or the religious organization. The school also releases all liability for students who go off campus for Released Time classes.