I have just found out the the school my DS1 will start in September has a permanent onsite police officer. This was not mentioned at all in the presentation and parent visits. Should I be worried? Do lots of schools have police officers based there? What do they actually do? Also a friend of mine has a DD in a different school that has regular police raids and the kids have to walk through metal detectors. Maybe I am being naive but my DS1's primary school was simple and stress free and now I am scared!!!