Work experience in Data Science: Couple hours with A-level student
Since you're busy at the moment, perhaps you could take a section of a dataset that you've worked with previously (and have the relevant processing stored somewhere) and let them loose on it. Then in a week or two go back and see where they've got with it.. it has the two prong approach of throwing them in at the deep end and seeing what they can do as well as providing a ready-made learning opportunity for you.