Summer enrollment is required if your CPT authorization is for the summer (generally May-August), unless your practical training is required by your degree program with no course enrollment. The CPT course can be 1-3 credits during the 8-week summer term. Confirm summer enrollment requirements with your academic/faculty advisor and your employing department if you are a graduate assistant.
You must intend to enroll full-time during the following fall semester (or have an approved ISS RCL).
If summer is your final semester, you must meet the requirements in the section CPT During Your Final Semester.