When DD12 was in 3rd grade, they worked toward 100 problems in 5 minutes with 2 or less errors. I think that all of the kids in her gt class achieved it by the end of the year. There was a big public display and prizes awarded when you reached the goal. Though my DD reached the goal early, she now tells me that it was a source of humiliation for the non-math kids. Everyone knew who hadn't achieved the goal. In fourth grade, the timed tests disappeared
When DD10 was in 3rd grade, they started timed tests but DD never came close to 100 problems in five minutes -- like many kids with dyslexia, she is not great with timed tests. In her case, the timed tests persisted in 4th grade. I'm not sure whether this was because she did not achieve "proficiency" in third grade or whether it was a case of having different teachers.
