The Mercer Science and Engineering Fair (MSEF) has been held for more than 50 years in Mercer County, NJ. It is open to students of Mercer County in grades 4 through 12. It is run by the Mercer Science and Engineering Club is held at Rider University, one of the fair's major sponsors.
MSEF is affiliated with the Regeneron International Science and Engineering Fair (ISEF) and the Broadcom Masters that is run by the Society for Science & the Public. Our fair designation is USNJ03.
Our fair registration documentation explains how to participate in the fair. The fair registration page lists the latest competition registration application. A user account is required to submit an application.