When I was a scout, whoever had done the best since the last one, the scoutmaster would sleep in his tent, and he would be his assistant for that weekend. I got to be his assistant 4 times!
If you're saying that the Scoutmaster would sleep in a boy's tent and that boy was not his own son then that is wrong.
If you are saying that the Scoutmaster and youth traded tents (the boy got the BIGGER Scoutmaster's tent and the Scoutmaster took the boy's smaller tent) then that probably was ok.
BTW were there other adults out there also?