There is a big difference between working hard and doing your best, and being made to feel a "failure" however hard you try, and it is the feeling of being a "failure" which is psychologically wrong for children. I know this from the 11 plus, and the fact I failed it, just how I felt, and when I wanted to be a teacher and was told that I didn't have the IQ to do this work, it cut through me. I've been a teacher for more than 30 years, teaching difficult subjects, and I've loved every minute of it and my students did well, many passing their exams with distinctions. Who has the right to tell a child that they have failed? Nobody! In fact I was simply a slow developer and many of the things I wish I'd been encouraged to learn and do when I was young, I've done in later years. In fact I have the qualifications now which would get me into Oxford of Cambridge for certain - - so don't put children down and make their lives a misery when they're children. Childhood comes only once in a lifetime!