Kevin J. Anderson & Rebecca Moesta,
1995-1998 This series spans 14 books, but I've only read the first story arc so that's what I'll cover here.
I read this series when I was in Jr. High school, and it may just be one of the first Star Wars books I ever experienced.
Across the first few books they encounter Brakiss, a former student of Luke's that fell to the dark side, who has created an opposing school called the Shadow Academy. Brakiss' goal is overthrow the Jedi Order and the New Republic, and its up to the four young Jedi to help stop this new threat.
Yet another book series I need to continue. This particular one reminds me of a simpler time, and I can't wait to be thrown back into such an awesome story.