Mitchell chose Penn State over offers from Arkansas, BYU, and Oklahoma State.
Sessoms will join fellow Penn State alumni Myles Dread, Tony Carr, Josh Reaves, Shep Garner, Mike Watkins, Jamari Wheeler, Trent Buttrick, and more on the team.
J.A.M. Fest will feature live music, yoga, meditation, art, and more than 15 stations hosted by local businesses and organizations.
“It is an honor to lead colleagues who provide the highest quality education to our students and who perform the highest caliber research to impact the world in substantial ways."
The men's team fell to the No. 7 spot, while the women's team jumped to No. 20 in this week's Inside Lacrosse rankings.
The cost of this year's home-game season ticket package is $246, which is identical to last year's price.