Naturally, I would not at all “force” the issue and let your student be the driving factor.
In the case of our town and my daughter, it was normal for younger high schoolers to be accepted as “Junior” members to the Ambulance Corps and afforded the opportunity to “ride along” on a weekly schedule. (It also helped the Corps to be sure that their later investment into EMT courses/licensing would go to people already having shown persistence).
This way, they were able to take their BLS courses, become familiar with the rigs and procedures, were able to observe, take notes, gather medication lists during calls, collect strewn-out equipment at the site, or from the emergency room - and be hands-on with de-contaminating/preparing/restocking the rigs after each call.
Not to speak of the excitement of having been part of “lights & siren” action, and relaying these experiences to their peers.
Of course, discretion was applied when deciding if certain calls were unsuitable for younger members. My daughter had spent almost a year riding along as a Junior, so by the time she obtained her EMT-license she was almost instantly put into full service, as she effectively had long undergone any “probationary” period and was already fully aware of procedures, policies and state laws.