Every teenager should work one.
Yup. I was a service-station attendant/mechanic (among other things). Between all the work rules and minimum wage, a lot of teens aren’t getting started on the first rung of the employment ladder. They’re not being properly taught in school, and they’re not being allowed to learn in the school of hard knocks. This won’t end well.
[Update a while later]
As noted in comments, working jobs like that teaches you the value of an education. I wasn’t that motivated about college after high school until I had a job as a VW mechanic at the local dealership, then got laid off in the recession of 1973 (it was a recession for the country, it was a depression for Flint and Detroit). I went to community college, took pre-engineering courses, then transferred them to Ann Arbor a couple years later.