<p>I agree with mikemac, you need to call Pitt and explain what is going on. If you had a C when you were accepted but the grade is starting to dip, just let them know. Acknowledge whatever is causing the dip on your part (i.e. bad managing time, etc.) and explain how you are working on raising the grade back to a higher one. If you at least acknowledge it up front it will be better than getting a call from THEM later on saying you can’t go.</p>
<p>Also, to actually answer your question, Pitt can revoke acceptances if your grades have dropped from what you had when you applied. That’s why people who get in early are frequently reminded that they have to keep their grades high the WHOLE year (no senior slump) because that is the level of academics the college is expecting from them.</p>