Guten Tag, lieber Tag (1961)

Engineer Strebel′s apprentices think of nothing else but music and dancing, although they should really concentrate on their marks. Consequently, Strebel is anything but delighted with his pupil. To top it all, a TV show becomes interested in a performance by Strebel′s apprentices. To calm down their teacher, Jutta Fröhlich, who has already cast an eye on Strebel, makes him an offer: When they better their marks, Strebel would permit them to make a performance on television.