File a Right-To-Know request with your school district. I do not know which documents are a matter of public record, but this is the way to request such documents. I have filed Right-To-Know requests with many municipalities for my work.
Emails and the such typically do not require a court order, though if it is a matter of RTK laws it may matter if a quorum is on the email (such as a quorum of the school board). Emails limited to less than a quorum may not be subject to RTK, but this is a matter for the school district legal counsel to determine. I do not know all of the legal aspects of RTK as I am not an attorney.
