BW, I'm also not a teacher, but like the other girls have said, the majority of my appts for blood tests, ultrasounds/follie monitoring were very early morning (sometimes before 7am), so I found that part of it intefered with work very little.

In terms of the mood swings, I found it didn't affect me so much, but the Puregon did make me really sore - my poor ovaries jumped every time I sat down or stood up, so it might be a good idea to make sure you can sit down if you need to, rather than standing up for great lengths of time during classes (I'm not sure what your normal process is), or at least have a tall stool to prop yourself on intermittently.

Best of luck sweets - I hope it all works out for you