Comment by Balgair

In the US there is a good, quick test to determine if a gun range is 'up to snuff'. Such tests are very important, as you don't want to be shooting with wackos or idiots. It tests the range master and their discipline and attentiveness to range users too. It's also important that it's a quick test, so you know to get out of there fast. If the test is failed, you leave and never come back. The test is as such:

Go up to the firing line, turn around, and look for any bullet holes/marks.

I've found all but two ranges of 15 near me that pass this test.