Yes, page 111 of the 2019-2020 IHSAA by-laws
54-7 A School may schedule one football Jamboree between Three (3) or more IHSAA member Schools. A football Jamboree does not count as a Practice, but does count as an interschool Contest. Only students who have full athletic eligibility may participate in a football Jamboree. A football Jamboree may not be scouted by anyone not affiliated with a team participating in the football Jamboree.
54-8 During a school year a School may participate in either a) a football Controlled Scrimmage between Two (2) member Schools or b) Two (2) quarters in one Varsity football Jamboree.