Absolutely. We live in a grammar/ 11+ area, local grammer is excellent, local comp is notorious for bad behaviour, fights etc. I don't like to believe gossip, so went to visit, and within 1 hour heard racist abuse, sexual abuse,saw a child smoking and several classrooms with poor behaviour. We visited the grammar, students showed each other and teachers respect.
Ideologically I don't believe in tutoring to get through the 11+, it goes against the whole original purpose of grammer schools. Am I going to do it to give my child the best possible chance, of course I am!