My guess is that the teacher has a boatload of students they are responsible for and that the administration of that school sees him or her successful if the students do well on the reading and math standardized tests. Ask your child if that is what the class seems to be taught the most. If this is the case, there isn’t much you are going to change.
My husband and I found it illuminating to occasionally sit in on some of our children’s classes. Sometimes what the student relays to the parents isn’t the full story. My daughter can tell you I’m no huge fan of the public school system!