2.5. If I didn't get a TA offer in the initial rounds of offers, do I still have a chance of getting one?

We do make a number of offers after the initial rounds since some TAs will decline offers or resign. We should know about these openings a month or more before the beginning of classes, and will fill them as they occur. We also make additional appointments based on higher than expected enrollment. These appointments are usually made around the beginning of classes. The number of appointments that open up after the initial rounds varies from semester to semester, but is usually about a half dozen. The TA announcement page contains more information.