Depending on when you went to school, you may have noticed a school resource officer on the premises. For me, this didn't become a familiar sight until high school.
In the interest of clarity, this was indeed a uniformed police officer whom we would sometimes pass by in the halls. While I'm aware that my experience may not match my fellow students at the time, I don't recall him doing much and don't remember hearing about any incidents he was involved in.
With that in mind, you'd think that an officer at an elementary school would be even more innocuous, but the experiences of one Florida family show that's not always the case.