Grade 10 and into grade 11 was a lot of emo/"screamo"/pop-punk (My Chemical Romance, The Academy Is..., Cute Is What We Aim For, Cobra Starship, The Devil Wears Prada, Chiodos, Taking Back Sunday, Brand New, Get Up Kids, etc.)
Moving further into grade 11, it was grew more into the indie+more (Ting Tings, MGMT, Arcade Fire, LCD Soundsystem, Tegan and Sara, Metric, Justice, Chromeo, The Prodigy, Flight of the Conchords, Band of Horses, The Submarines, Natalie Portman's Shaved Head, The Moldy Peaches/Kimya Dawson, Bloc Party, Vampire Weekend, Peaches, Regina Spektor, omg so many).
Twelfth grade I leaned reallyyyyy hard into my whole Yearning phase before I left for college so a lot of Stars, Sufjan Stevens, Rilo Kiley, Beirut, The Naked and Famous, The Decemberists, Phoenix, Foster the People, The Smiths (lol)...
The list could go on and on, but it was a fun time, musically.