Details for participating in the 2026 Loudoun County Regional Science & Engineering Fair will be added by June 15, 2025. Please check back later!

Every March, students from almost every LCPS high school and at the Academies of Loudoun enter research and engineering projects in the LCPS Regional Science and Engineering Fair (RSEF) to compete for a variety of prizes. These prizes include placing 1st, 2nd, or 3rd in one of 22 categories (which comes with a monetary award), as well as numerous special awards that include certificates, monetary awards, opportunities to participate in special events, and various other prizes. A small group of students/teams are also chosen as our Finalists who will represent LCPS as competitors at the International Science and Engineering Fair (ISEF). Along with monetary awards from RSEF, these finalists are provided an all expenses paid trip to ISEF where they will have the opportunity to compete in categories and grand awards totaling almost $400,000. The top prize is $75,000 with two other awards of $50,000 each. They will also compete in the ISEF Special Awards Program awards totaling around $4 million in tuition scholarships, summer internships, scientific field trips and laboratory equipment.  

There are several pathways to participating at the LCPS RSEF through county programs in which students design and implement scientific research or engineering projects aimed at potentially competing at the LCPS RSEF. Explore these pathways below.