I was a Small town police officer, Deputy Sheriff for 11 years. I understand the situation the officers are in when they recieve a complaint from a citizen, but they need to be able to site an ordanance against what you are doing. In this case, they would probably use vandelizm.
But, also in this case, when you have permission, how can that be? Would a grounds keeper digging a hole for to plant a bush also be guilty of vandelism? I would truly be temped to do the following
if it were me (and it isn't) lol
1. Be extremely respectful to the responding officer.
2. Explain you have permission, and you are not violating any ordance, law, or rule of the school.
3. Take before and after pictures of the grounds to show it's condition.
4. Explain to the officer, you feel bad for his possition, but since you are not violating any law, are going to continue to detect.
5. If he places you under arest, which I doubt he will do, go very willingly and peacefully, and keep your mouth shut.
6. When you are being booked, ask to call a close friend or relative and have them contact the school officials and media,

and tell them you are now in jail for doing what they gave you permission to do.
The media will have a field day with a school employee being arrested by local police on school property doing what she had permission from the school officials to do.
Hey, it is a misdomeanor anyway, and you don't have anything else to do this summer! lol
(send me the news articles! )
