I agree with this idea and would propose a simple method of free access for schools. I am involved with Tech / IT education using picaxe + RasPi in New Zealand. See photo share >>> http://picasaweb.google.com/picaxe
For WU to practically work and be able to be at least tested in a classroom under the time constraints with multiple students trying ideas out in a school environment the Drizzle access would be needed for a typical class of students to be able to tinker and test ideas. Perhaps a written or school office e-mail etc ? registation or some simple technique.