Although students from around the world recently started their summer break, Hearthstone is headed back to school. On Tuesday morning, Blizzard Entertainment revealed their upcoming expansion for the long-time collectible card game, Scholomance Academy. The fifteenth expansion, set to launch in early August, introduces 135 new cards, including 40 Dual-Class ones that (as the name implies) can be used by two of the ten different classes to create unique playstyles, strategies, and mechanics shared by both.