I just realized that you said you go to school from 8am-9pm..so i guess you would need more food, than what i posted..well you could always snack on veggies with low-fat dressing and fruits...believe it or not, they arent as expensive anymore, you can get an entire bag of about 10 carrots for 1.78$ where i shop at..and carrots keep well, so you could pack those with low-fat ranch..100% whole grain rice cakes are good, but not very filling...i eat green apples alot when im on the go..and i just got an entire bag of 14, for 3.50$...i could eat 2 a day for a week! Of course nuts are great to snack on..but are a little pricey....i dont eat much from the middle isles, but maybe you could find a really good brand of granola bars, just read the label....and i bought my boyfriend a little lunch box with ice packs for when hes at work, and his food keeps really well..so maybe you can buy a little lunch box, so you can pack fresh things, instead of eating packaged all day...