Paul Benjamin 
Pantheon High, Volume 3 [PDF ebook] 

The New York Times–bestselling author’s manga series continues as the demigod students prepare for midterms—and fight to save the world! Gimme a T-R-O-U-B-L-E! What's that spell? Trouble, with a capital T. And that's what Pantheon High's got going for it as the demigod students into midterm season. Fortunately they’ve been hitting the books extra hard to earn their marks in heroism, and when you throw in an extra-curricular excursion to fine tune their fighting skills, there's no doubt that Griffin, Grace, Aziza and Yukio are going to get an A+ in stopping evil!