Route is forced and from the first, there is only one thing to understand about the lock that removes the only risk for wasting moves. A bit too easy I think for Junior High.
Hard for me to decide how many stars. Got it on first try, but as said by Alazeh, it's not intended for experienced players and maybe beginners at the game could struggle? Am not sure because route is more or less forced, at least for half of it. It's only about optimizing. I go for average 3 stars.
My old review from 15 years ago was pretty harsh on this level. I still think it's a bit too linear, but it's not terrible. The false routes could definitely use some tightening up.
Agree with Hi19hi19: the false route is much too obviously false, so we don't even try it. As for the correct route, there are sort of 3 "tricks" but the design is so clean that they are easy to spot.