Why just make a rectangle?

We didn't.

In fact, not long after the school district inquired about 'a sign for the driveway', they left with custom shaped driveway signs, that matched the window stickers on the doors to the schools to announce the ongoing surveillance at the school campus.

For not much more than a few rectangular driveway signs, they have an easily recognizable system of notices that should help in the effort to deter bad guys from causing mischief, or mayhem before it starts.

Is the message true? Look up and around when you're at the school and see for yourself...

This project is a great example of alternative solutions to what you might think is a simple problem.

Using a system of coordinated signs/shapes/signs will tie your message together and increase how well it works.