I go to a school which has a serious problem with underage vape usage. The police sometimes conducts random drug searches, and after every search, parents are informed via email. Each email has consistently said that the search did not find any illegal substances.
Are public school required to disclose accurate information about the drug searches? Can they lie about the results to make themselves seem better?
I don't know of any law requiring schools to proactively disclose the results of these sweeps, but if you asked for them, the Michigan Freedom of Information Act would likely require both the police and the school to release records that would give you an accurate picture of what happened.
At the very least, I would expect the police department to write up the results of its sweeps in a report to send up the chain of command. I would also expect that those results would be communicated in writing to the school district. The police should also maintain a log of all property they have seized; if they seized anything from the school, it should show up there, as well.