Can you enroll as a second courser in the same degree but different school?

Generally, no, you cannot directly enroll as a second courser in the *same* degree program at a different school. The concept of a "second courser" usually refers to taking individual courses at a university, often to fulfill prerequisites or electives, *without* being enrolled in a full degree program at that institution.

If you've already started a degree in, say, Computer Science at University A, and want to switch to University B to complete the *same* Computer Science degree, you'll typically need to apply for admission *as a transfer student*. This involves submitting transcripts from University A and undergoing a new admissions process at University B. University B will then assess your credits from University A to determine how many courses you'll need to complete to earn their degree. They may not accept all your credits, requiring you to take additional courses.

In short, while you can take individual courses as a non-degree student, you can't typically directly enroll as a "second courser" to complete a degree you've already started elsewhere. The process is a transfer, not a second coursing.