Hello guys,
I got the conditional admission from NU, that is I have to attend LEAF program before the academic year. However, recently I was notified that the LEAF program is full, and I will be put on the waiting list.
I am really nervous now, wondering whether this situation happened before. Also, did he or she enroll in the class successfully?

Many Universities offer a similar program such as Georgetown, UC Davis, etc. Just ask NU if it is acceptable to do this program in another University. I am going to georgetown Summer Experience and they have a similar program.
http://www.law.georgetown.edu/academics/academic-programs/graduate-programs/foundations/

I know for a fact that UC Davis and Michigan also have something similar.