We in education seem to be addicted to acronyms. NCLB (No Child Left Behind) is probably one of the best known, however.
Several years ago, when NCLB was just getting started, Carol Ann Tomlinson spoke extensively about the damage it would do to our gifted students(GT = gifted and talented). Faced with having to make all students meet benchmarks, teachers would not be able to focus any real attention on students who were likely to pass tests without our support.
I believe, and it seems I'm not alone, that she was correct in her prediction. In some ways, this seems like a no-brainer. Of course schools will focus on students who might not pass the test. We will be judged harshly based on those scores. If students are likely to pass, with or without us, they can go ahead and do so.
As a result, those students who naturally do well in school or who have lots of family support for their education or who simply test well are likely to be allowed to float along without being challenged academically. It seems to me that all that NCLB has done is change which children are left behind.