All kids are tested, in the time frame that the school dictates, but if a parent has a kid coming into K she can request the testing be done early for whatever reason.

Our school flagged DS to be tested in 2nd grade. It all depends on the kid. Some roll along and test when general testing is done. Others need testing much earlier.

My point is that a teacher or parent can flag a kid apart from what the system dictates.

"Too often we give children answers to remember rather than problems to solve." -Roger Lewin