Just wait till you get to college. Depending on which school you go to, there are more or less of the types you described. And it can be pretty disappointing when you learn that all the vigor and eagerness to learn in the world won't match up to following the exact rubric of your professor and doing every thing in your assignments to please them. Lots of kids in college don't care to the extent that you seem to say you do about learning, they just care about making the grade and graduating with a good GPA (and other stuff like honors societies). And after a couple years of college most kids end up taking that approach. It doesn't sap you from your vigor to learn, but it realigns you to a more practical approach. You learn to analyze, argue, collect data, manage time, please professors, and write research papers, which are all skills you need to be a good member of the workforce. Learning those qualities lets you do your real learning on the outside, with books and other pastimes, but in the classroom it's much more about method and discipline.
Real fun stuff comes in graduate school. I'm applying for a masters in philosophy and a masters in clinical psychology, then trying to take that clinical degree for the Ph.D. ride. The first two years you'll learn in a seminar environment (some of your upper level classes in college will be like this) and those courses work like this- you sit with a handful of other students and your professor and bounce ideas off each other based on the material of the day. It's much more open than a lecture and great for debate. After a master's, if you are going for the Ph.D., you get fellowships and institutional money to live on and conduct research for your 300 page dissertation that you have to defend against a board full of doctorates. The whole grad process affords much more freedom and personality to your learning. College is just a machine you go through to learn how to take it like a champ. But that's just my opinion.