Many states have agreements with each other that permit residents toattend an out-of-state school but pay in-state tuition rates. Tuition and fees for public in-state residents was $7,500 last year and $17,000 for out-of-state students. Last year, the price of attending a nonprofit college increased by 3 percent (to $24,300) and tuition at for-profit college went down. While her classmates agonize over which college to attend, high school senior Samantha…