In my older son's school (middle school) there is one class (of 25 kids) per grade set aside. The total number of students is 1000-1100, it enrollment fluctuates. So 75 kids in the whole school are in a special academy. All of the teachers who teach these kids are either gifted endorsed or almost finished with gifted endorsement. The 25 kids travel from teacher to teacher together as a unit other than electives (other kids in the school don't travel together like that their classes are random). This is the class if you are identified gifted where you are served. Now some kids are accepted into this academy without the gifted testing by application and teacher rec. Some just haven't had the gifted testing yet but the kids they accept who aren't id-ed yet generally have the traits. The class has to be a full 25 kids so they do fill in a bit. This has been one of the best moves for my son and each teacher tries to do a lot of really good project based learning because they have the time to add that in on top of the basic stuff.