I'm in the same boat as you. My school only did the impressionist movement. If u look over the main artists like monet, Renoir and so on u might be ok. Look over realising as in Manet too and you can tie him in with the others cause he influenced them
http://youtu.be/MZAiozU0bL4
This guy was bang on with my exam today so I'm counting on him for art too, in HL he mentions impressionisst but you should definitely check him out :)