As much as I see the need (and applaud the CAD into schools initiative in the UK
Students need to sketch; to explore ideas and thoughts, to share that 'thumbnail' sketch with peers and teachers and parents, to shape and play and refine line and form BEFORE hitting their Macs or PC's. They must be encouraged and guided to sketch freely and boldly first before moving to CAD to generate assembly drawings, final views and so forth (in fact these could be sketched too but thats another issue). This is NOT SOLEY a demain of the Art class
Sketching is an aid for language learning too. Having taught for six years in a school where English is not always the first or second language a quick sketch to convey the idea or item often saw lots of understanding and nodding faces quite quickly.
Sketching is a key skill for our subject; a major factor in the development, generation and plucking of ideas from young fertive minds. Let us not allow it to slowly disappear please. And let us not allow those teachers/parents/managers with 'little knowledge' of our subject look at the shop window of a CAD image and think "my, isn't this child a wonderful designer".
Very dangerous indeed.