My youngest, ( now 22 ), went to Lancaster Grammar. His junior school worked with those pupils intending to try for the Grammars, ( both the boy's and girl's schools ), to prepare them for the entrance tests. We didn't pay anything additional for preparation, and we are convinced that he got a much better education, both socially and academically, at LRGS as compared to the local High School.
Our regret is that we didn't push our other 2 children to do the same, although both did go to University.