Wildlife Spotting

I know it's a toad of some kind because of the obvious warts on it, but I'm not sure what kind of toad it is exactly... I'm thinking it's possibly a Fowler's Toad.

Some jerk brought this poor guy inside the school, and I was able to catch him before the class change (where he surely would have been trampled, and cause tons of chaos). After letting the science teacher get a good look at him, I was tasked with taking him down to the marsh/creek area behind the school, where I took this photo before he hopped off.