I agree 100% with this, I spent some effort with my local LUG (WYLUG) to put together a 'Schools Page' and wrote to a few local schools presenting ourselves and offer support and information if they wanted it.
So far we have not heard anything back - I guess that they are either not interested or simply are too busy coping with the other problems that they have in school.
I wrote to some local schools offering Linux setup services as a private individual, guess what - none wrote back. Snap! I did manage to arrange a meeting with someone at a school in Slough, he said it sounded "intriguing" and that was the end of that. Eventually I hooked up with Nigel Pauli of St John's School in Northwood near Pinner, London. He is tremendously enthusiastic, very committed to the free software movement, and of course I met him at a LUG. Perhaps it's hard to convince skeptical people they should "buy" free software, in both senses of the word, because the motivation needs to come from within?