Public high school property is public property. However, under each state's laws the ability to film on a public high school for assorted purposes is regulated. For example, proper permission in writing must be asked and received and the set time periods for the filming must be approved by the school as well.For example, one cannot simply go onto a high school campus during a school day and start filming without permission to do so. Such conduct would be disruptive concerning the school's normal day to day operations.