I am a teacher and the water intake wasn't the best. I still drank about 32 ounces of water, but most of it was during lunch time. I just didn't have much time to drink during actual classes. Plus, there is a "only clear liquid" rule at my school, so the times that I would bring water mixed with Crystal Light, I would have to keep it in my bag anyway. Stupid rule...but what can you do?
I had a similar problem though with having to run to the bathroom so much after drinking all that water. It literally took until the spring of this past school year to get a key to the bathroom....I have been there 8 years!!! So I was always using the teacher's key next door or my para's key when she would come for math class. My free block was usually second block of the day and I definitely didn't need to use the bathroom then. If my schedule is correct, my free block is after lunch this year...so that will make bathroom runs a bit easier

LOL But they also have me scheduled teaching two different classes in different rooms at the same exact time...so we'll see how accurate the schedule really is! haha