Fowlerville High School will reopen on Wednesday.
The school has been closed for two days after learning one student had a probable case of swine flu.
There's no word yet on test results for that student.
However, Fowlerville Community Schools say it's following new federal guidelines.
U.S. health officials say schools don't need to automatically close due to suspected cases of swine flu, because the virus is proving more mild than initially feared.