HISTORY!!!
We have a teacher who spent a year on one section of our GCSE (Russia 1905-1924) and is now trying to rush through all the other sections of our course (Russia 1924-1991, USA: A Divided Nation, and Nazi Germany). She made us do two pieces of coursework in a week with no prior knowledge (apart from 2 lessons) of the subject matter (Britain in the Blitz and Women's Rights) and she still has to teach us the majority of the USA topic, despite there only being 3 weeks left of term.
She is leaving at the end of this year, so luckily she won't be able to inflict her bad teaching on any more unsuspecting pupils!