Marilyn , Thank you for your post. Keep in mind this is a 2-part question: 1) how often must progress be evaluated and; 2) what are the minimum requirements. The TWC CSC rules vary based on length of program. For programs over 200 hours, progress must be evaluated at least every 8 Weeks. Credit hour schools must evaluate progress at the mid-point of a quarter or semester or at least every 8 weeks. The principle here is that the student is advised early so they have an opportunity to improve their grade(s) prior to the school taking action such as academic probation. JP Mehlmann