I hardly check the school site in the morning...so i come at school alot to figure i can go home.
I've had that with a teacher in the first 2 months, it was an extra-class (we have to do 3, and they're in the evening mostly) and so i had no clue where to find information about that department. She was sick 3 of 8 lessons... never got an email, always justwaiting for hours...
Than the last lesson she wasn't there, she didn't send me an email, and she was not listed as 'sick'...I had a damn free day, and came all the way in the evening just to be send home again
(The only good part, i send a formal angry message and the reply i got was "You're absolutely right, i'm sorry. But i'm happy that you took the time to tell me")