[CualkThief]

This is completely possible to do. Although I'll say that if you had the skills to change your grades with out being caught , well you wouldn't have to change them in the first place. Depending on how they have things set up it could possibly be as simple as hoping on teachers computer while the coast is clear. But Really what everyone that asks this question fails to think about it is how easy to catch it and you. Your teachers surely have a pretty good idea of what your grade if not exactly what it is. And would defiantly alert them next time the go to enter some grades and your magically a 3.7gpa from like a 2.5. And if they know they didnt change it, and its extremely unlikely for some one to randomly change someones elses grade for the better guess that leaves you.