and focus after that on getting decent lense to go with them (the lenses being more important at this level than the camera body
I'm inclined to disagree with you a bit here. For the purposes of the course, what is the most important aspect...the art/skill in composition an eye-catching shot, or the technical quality of the final image produced?
Obviously I am not speaking from experience, but although I'd usually be inclined to agree in saying the lens is more important than the body, for the purpose of a course I'd say it's the other way round.
I'd first and foremost look at the level of manual control that the camera offers...this would ensure that you give the student the ability to be truly creative.
Then I'd make sure you provided a focal length range to ensure a wide variety of subjects could be capture...I kit lens would probably offer you enough if you go down the DSLR route.
Then you get them to go nuts and be creative with it!