Sheesh V- that's insane!!! I had 30 fifth graders a couple years ago and it was sooooo tough to manage all those diff. learning levels and styles. I almost went insane! It's way too much to ask!
Actually, I'm lucky this year. I moved districts and am able to teach Math to all the 5th graders, and Language Arts and Spelling to my homeroom class (which is good and bad because I have 3 less preps, but 68 more students to keep up with in a subject that, like Reading, has my kids from 2nd grade level to 10th grade level in abilities). I guess I'm really trying to keep the peace with 92 families since Math is the biggest push in our system right now (and I agree about the state standards- man we rush through the dang curriculum so fast so we can be ready for "the test" that it's ridiculous).
V- find a different district if you can (not that it'll help with state standards- but I found changing districts made a huge difference in my outlook and in my stress level). I had burnout BIG TIME a couple years ago and was ready to leave teaching altogether. A little change has made a HUGE difference in my life.