One of the most popular ones and possibly one of the most popular 80's films of all time falls in to this category. It could be argued that it is a straight up science fiction comedy but I think I contains enough elements to make it a teen film. The film I'm talking about is
26) Back To The Future
Another film with a time travel element to it and totally worth watching just to see a young Nicolas Cage & Jim Carey du-wopping in a very entertaining scene.
27) Peggy sue Got married
Other 80's teen film set in the 50's/60's include :-