I think you mean FSFlyingSchool.
I’ve been using FSFlyingSchool for nearly a year now and it’s a fantastic tool. It helps me find areas that need improving and that I’ve overlooked as without it there’s no one to show you where you’re (becoming) sloppy.
I tried some of the lessons in FSAcademy but found them too rigid and staged. Climb to x feet, hold for y seconds, now climb to z feet, etc. It’s a very polished product, but is not dynamic in any way. This is where FSFlyingSchool really shines, as you can fly anywhere and have feedback, advice AND rating.
I think there is a place for both products. Hats off to both developers as they are top quality and cover functionality that’s missing from MSFS. If in doubt try the demos / free trials.