Find information on Regeneron ISEF fees and payment deadlines. Affiliated fairs pay both affiliation fees and registration fees.

Regeneron ISEF finalists compete for nearly $9 million in awards, prizes and scholarships.
Each year more than 1,700 ninth through twelfth graders earn the right to compete at Regeneron ISEF by winning a top prize at a Society-affiliated local, regional, state or national science fair.

Society Staff: Emily joined Society for Science in 2019 and works as an Outreach Programs Senior Specialist, working predominantly with the Advocate Program and ISEF Education Outreach Day programs.

Affiliated fairs are members of the Society for Science network. These competitions exist in nearly every state in the United States as well as over 70 other countries, regions and territories. Fairs are conducted at local, regional, state and national levels and can be affiliated with the International Science and Engineering Fair (ISEF) and/or the Thermo Fisher Scientific Junior Innovators Challenge. To compete at ISEF, a 9th-12th grade student must first win the honor through participation at a Society-affiliated fair. Each affiliated fair has a designated number of projects (individual or team) that they may support to come to ISEF.