Originally Posted by Len Backus
Catholic gradeschool education here. Perfect grammar and near perfect spelling --- until I gett carless.
I think you just answered the original question! I recall being graded low on one paper for using the rules taught by another teacher. Many public school teachers are teaching subjects in which they lack the requisite background.
I subjected my children to K-12 Catholic schools, and neither required remedial classes to enter college.
My eldest had an interesting experience writing a collegiate level paper. She chose health care as a topic, and apparently the content was not well received. Worst grade she ever got, and nearly cost her a scholarship. This kid doesn't think can write, she knows she can. She also had a liberal arts advisor that didn't think she would need chemistry to attend pharmacy school. She did not take that advice, wrote more PC papers, and has one more year to achieve her Pharmacy Doctorate.
Just one public high school here achieved the state "mandated" testing scores. Of the dozen or so girls my daughter started kindergarten with, 4 I know of will be Veterinarians, and Doctors of one type or another. It's probably more but I've not kept track of the entire class.
Catholic schools quit using testing from public schools as comparison because it lowers the bar to the point of meaningless.