ok - For those not of my generation (mid eighties adolescence), in the UK ... the "School Disco" may be a very misleading term. It didn't really involve disco music at all. It was just "Dave's Mobile Disco" (two knackered turntables, some dirty tube lights and a box of 12" records) in a school sports hall playing chart toppers from the time. For some reason Colonel Abrams and Jermain Stewart tunes spring to mind, but there were other , much darker offerings including Jive Bunny and Black Lace. And then the slow dance section, by which time the Merrydown Cider (8% alcohol) would have really kicked in - Crazy for You and Lady in Red (!!!), and us lads got the chance to letch over the lucky (or misguided) girl who agreed to put up with 3 minutes of hell walking round and round in circles with us draped over them (I went to a boys school, so the local girls school were invited to our discos and vice versa - lucky them. A room full of hormonally imbalanced adolescent boys deprived of female company for most of the time - it must have been an awful sight).
Ahh - the good old days.