Sounds like they are letting him, an ROTC Cadet, go through a platoon level indoc for an Infantry BN's Scout platoon?
Who knows, since there's no official "selection" for such a thing and it's homegrown. Likely will include a PT test, rucking, maybe some land nav, perhaps some skills testing, etc.
Or is this a Spur Ride?
In the end, he isn't gonna suddenly become a Scout PL or anything. Sounds like they are just including him in some training.
If it's a spur ride, he will be given a certificate and inducted into the Order of the Spur (unofficial thing) if he completes it.
However, it's a great opportunity to move beyond some canned training and actually interact with folks who want to be better than average.