Wisconsin Department of Public Instruction (DPI):

Wisconsin high school students may apply to attend one or two courses in nonresident school districts, while remaining enrolled in their resident school districts for the majority of their classes.
ACCEPTANCE OR REJECTION—RESIDENT SCHOOL DISTRICT
No later than one week before the start of the course, the resident school district is required to notify the student if the application is denied (notification is not required for approval).
The resident school district may deny a student’s application only for the following reasons:

  • the cost of the course creates an undue financial
  • the course conflicts with the individualized education program (IEP) for a student who needs special education.

No later than one week before the start of the course, the resident school district must also notify the student if the course does not meet the high school graduation requirements in the resident school district (although the student may attend the course even if it does not meet the high school graduation requirements.)