I'm 16...decided not to get the 504, it really doesn't effect me enough and I don't forsee it doing so, since I have a pump/sensor....
I never eat school lunches, they're terrible. I figure they have about 150-200 carbs a piece, its nuts. I either have a water bottle or a bar for lunch, and sparingly a snapple and an ice cream

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I used to eat a snack in class, the teach didn't mind....when I'm bored I check my number on the sensor, look at graphs, look at daily totals.....haha. A teacher actually thought it was a cell phone once....tried to take it.