The Mercer Science and Engineering Fair (MSEF) is affiliated with the Regeneron International Science and Engineering Fair (ISEF). 

The top MSEF winner(s) in the senior division move onto ISEF. All ISEF finalists must be chosen by an affiliated fair. You cannot enter ISEF directly. The MSEF competition is in March and ISEF competition is in May. Our winner(s) receive an all expense pair trip to ISEF.