My Students Are All Grindlords, So What's Wrong With Me Taking It Easy?

A century ago, a game descended upon the world, and everyone had to take the once-in-a-lifetime college entrance exam upon turning eighteen. The better your results, the rarer the class you could change into. Becoming a powerful expert, or even achieving immortality, was no mere dream. Those who failed to meet the required score, however, would remain ordinary for the rest of their lives. What should you do after failing the college entrance exam? Why, found an academy and benefit all of humanity, of course. Ding! “Critical Hit Academy has been built. All students' growth on campus will receive a hundredfold critical hit bonus.” Ding! “Student enrollment detected. The principal is awarded an S-rank skill.” Ding! “A student of this school has leveled up successfully. The principal is awarded attribute points, which can receive critical hit bonuses.”