Yeah that seems to be the case round where i live aswell. the parents are so deperate to get their kids into grammer school they they go to such lengths to make sure they pass. its sad really because then the child doesnt get in because of their own intelligence but because of the news that would have spread about which questions are included in the exam.
When i did the 11+ exam a few years ago some of the other children there were told by their parents or tutors to steal they scrap paper that they use so that they can geta rough idea of the questions in the paper and then use it for next year. The lady supervising caught her trying to take the paper and made her give it back. Thats just another sad example of the huge lengths people go to to pass. Why cant they just do the sensible thing and take the exam and just be sensible, no funny business?