Exact Sports ID camp was the very first ID camp our older son did during December of his sophomore year. It was our way to be able to communicate easily with coaches since he was not yet eligible for coaches to directly contacting him.
Our experience was that the camp at the time had 3 of his interested schools involved and was able to get assigned to one of them as the primary coach for the two days (they breakup the kids into small groups led by coaches). Additionally, they are taught about attitudes, importance of clean social media, do's and don'ts as well as parent session to discuss what to expect in the journey.
The scrimmage based camp is conducted by breaking up the entire group into by graduating year. They play against within the graduating year only (except freshman and 8th graders - they are the smallest group and usually set aside for the boys so I would not bother to send 9th grader or younger).
Now the bad side. You have to keep in mind that these coaches are paid to be at the camp by the organizer. Its sort of a rubber chicken banquet circuit in that the same coaches make the rounds and often they are distracted by their smartphones. Not all coaches behaves this way but many do.
So, after all that, it was good for our kid's first exposure to an ID camp. After that, he only attended targeted school's own ID camp. What we'd found was that if the coach liked the player at Exact, they'll invite you to their own camp (which by the way, anyone can attend anyways but...). The advantage of being invited is the continued dialogue and group sorting at the school's camp (Yes schools ID camp usually divide the groups by those that they know and are interested in, and those that are unknown to them).
I think the Academic 50 label is to get the parents to pay more for the same camp. Most of those coaches are there at other events too.
Hope this helps... Cheers!