I found out about Mischief in 1984, when I was in Ohio and heard that they'd made a movie in Nelsonville. (That is the town with the 'square' in the middle of downtown featured in the movie). Except then the working title of the movie was "heart and Soul" (thus the closing theme song). I saw the movie on 2/7/85 at a radio station (z100) sponsored preview. Those who don't remember it, well it was in the theatres for about three weeks.
Despite being made in '84, but set in the 50s or early 60s (i forget) they didn't have to change much about Nelsonville to get that look. Much of that town looks the same way today. I went back to Nelsonville in May 1985 and people told me that they just added a few store fronts, put different signs up, and routed traffic the wrong way around the square (when do you get to a 'circle' in the US and keep left...see the background in the closing scene). Actually some of the movie was shot in Canal Winchester...like they drive down the street in Canal Winchester (up near columbus) and come out at Public Square in nelsonville.
When I saw the movie I gave it an A+ for setting and an A- for content. I would say "Jonathan" is more like a typical boy than a nerd, just a shy one who likes girls but doesn't know what to do about them (until Gene comes along).
Well, I could probably write a lot more than imdb allows. I probably know more about the movie than most people that aren't in the film industry or don't live in Ohio, since I talked to people and drove around looking for places where certain scenes were shot. if you wanna talk about this movie email me