I petition for water coolers to be placed in classrooms because of:
1. It's been proven that when a person is dehydrated or doesn't have enough water in their system, they can't concentrate (not as well anyways).
2. Leaving class for a drink is no longer necessary seeing as students take 'having to get water' as one of few excuses to leave a class for several minutes or just to cut the entire period.
3. It's convenient and functional for both teachers and students.
4. Could lead to less trash left about by students in terms of bottles from purchased beverages.
5. Could subtly, if continually enforced, lead to better health(?).
Okay, the last one is up to debate and kind of unlikely, but that's why it says 'could'.
Cons - Vandalism, overall cost.