As a kid, I know my standardized testing did. They would give 4 sentences and you have to choose the one that was written correctly. This included apostrophes and comma placement.
My kids in Catholic school get a ton of grammar lessons. We had one young boy leave our school after 2nd grade for reading help and he came back in 6th, his mom had to get him tutoring in grammar because he was so far behind his classmates. He had no idea what a prepostion was in 6th grade!
But I still do not get what is wrong with teaching the materials on the test, why is that a bad thing???? Once again if we are teaching certain math skills for 4th grade and that is what is on the test because School A is teaching to the test, wouldn't School's A students do really well?