No I am not really. In the first instance, teachers should go with what would give the greatest benefit to the greatest number. No, I don't think it is possible to know until you try. And some children may not get it staight away because of immaturity rather than any serious problem. I think this is where the problem is. The instruction has been effective for everyone else but not this person. How long can you keep trying the same thing? I agree that coloured lenses make the act of reading more comfortable for those who can read, they don't enable reading for those who can't. I will have another look at the Kerry Hempenstall site.