In my teaching program, there are two possible ways do to the foundation classes:
1. Apply to the program as a graduate student and then take the classes.
2. Just take the classes (which only works if you are an undergraduate at the university).
After the first year, the undergraduates have to apply to get officially accepted into the program and continue on to the second year. For some reason, though, they make the graduate students, who have already been accepted to the program, reapply. Now it isn't a full application, as they already have our stuff from the first time we applied, but we still have to update our statement of purpose and get another letter of recommendation. Why? I don't know. What I do know is that people who have been in the graduate program the whole time wind up having to have an additional letter of recommendation, which is just a nuisance.