What are you hoping to prepare your pre-college student for? Hopefully professional skills that are adaptable in a fast-paced, changing world. Current pre-college students can't count on one professional position or even a series of professional jobs to support themselves. They need to be able to roll with the new gig-economy.
The gig economy is one of adaptability, planning and awareness of what skills the student has that could be valuable to others. Students often have jobs but they increasingly also often have alternate gigs going on at the same time. The logic is that companies and jobs can't be counted on to last very long. Alternate gigs are entrepreneurial activities geared to be plan B in the present and possibly a successful enterprise that will free them from the need for their day job in the future.
Encourage your student to take coursework in entrepreneurship and product development as part of their college electives or as a minor. Knowing that they can be a valuable commodity will be critical to them as they continually adapt in their professional life.