Hey there,
I guess sometimes it depends on the theatre...a lot of times, they won't even ask to see the ID (I'll have it in hand, but when I ask if they have any student tix available, they'll just check and say "that'll be $26.50," or whatever)...but I've also run across theatres that are really picky. My ID is also a debit card for the school (for students that have a meal plan, put $ on for laundry, etc) and I've had a couple give me a hard time about that (even though it says the school's name and has my photo on it). I think if they question you and you explain yourself (and maybe have another photo ID, like a driver's license or something that has your name on it as well) you should be fine! Good luck!!!
But when did New Hampshire become--Such a backward wasteland of seatbelt hating crazies?...I mean, only 40 people actually live there. The others are just visitors who come for the tax-free liquor and three inches of novelty coastline. John Hodgeman on The Daily Show (1-30-07)