So did C-dog's teacher and I dropped in unexpected for a little sneak peak, she was full of s**t.

Trust your instincts. If your instinct is telling you you should look a little further into things, then perhaps it would be a good idea.

As a parent you can come into school to view your child for any reason, if you choose to. You don't have to notify the teacher in advance. If you're smiling, polite, pleasant, and don't make a big deal out if, no one will get "weird" about it KWIM?

If you have the opportunity to volunteer, or pick up something from school, or drop off something your child forgot, say, like his lunch that you purposely didn't pack for him. No one would be the wiser if you walked past the class and peeked in.