Complex sentence: On June 23,2007,55 music students were selected to participate in the second episode of the reality show "Schooled", after which they were surprised with a private concert by The All-American Rejects and given backpacks filled with OfficeMax merchandise.
Split into simpler sentences: On June 23,2007,55 music students were selected to participate in the second episode of the reality show "Schooled". The students were surprised with a private concert by The All-American Rejects and were each given a backpack filled with OfficeMax merchandise.