If your school district has a policy that all volunteers must have a background check, you could have the by-laws state that officers must be eligible to volunteer according to school district policy.
Has anyone run into a situation where a PTO member has a possible conflict of interest - such as pending civil suit against the school district or a staff member due to incidents that possibly occurred at the school.
Additionally, does anyone have any wording in their bylaws that prevent people who have a criminal history from serving on the board?