Special Sessions
Whether it's winter or summer, our special sessions offer flexible ways to keep learning. Choose from online, on-campus, and field-based courses to catch up, sharpen your skills, or discover something new.
Summer Session 2026
Registration opens for these sessions on February 1, 2026.
Maymester | May 11 – May 22 (2 weeks)
Summer Session 1 | May 18 – June 26 (6 weeks)
Summer Session 2 | June 29 – August 7 (6 weeks)
Combined Summer Session | May 18 – August 7 (12 weeks)
Tuition Liability Schedule can be found here.
Class Schedule and Course Descriptions
Summer 2026 at Cranberry Lake
View course descriptions for registration information.
Session A | May 24 - June 12, 2026
Session B | June 14 - July 3, 2026
Session C | July 5 - July 17, 2026
Session D | July 19 - August 7, 2026
Winter Session 2026-2027
Registration opens for Winter Session on November 1, 2026.
Winter Session | December 16, 2026 - January 8, 2027
Class Schedule and Course Descriptions
ESF Students
Sign up through the Registrar and watch your registration status in MyESF.
Non-ESF Students
You don’t need to be a current ESF student to take a summer course.
If you are a matriculated student interested in enrolling in an internship, please complete the
Internship Registration Form located on the Registrar website and follow the instructions listed.
