Level for Years?

Okay, so TWC did a thing where if you get X amount of levels then you move up one year. For ex. Level 1 = Year 1, Level 51 = Year 2, Level 101 = Year 3, etc.
With each year things started to open up, like at year 4 we could go to the bar (underage drinking lol?), and eventually we could get out of Hogwarts (nothing much happened after that though). So is it going to be like TWC or is it going to be something else, and will things open up to us the more we move up in years? I think it's good that things open us when we gain years. I like to think of it as getting older, for someone to be able to drive they have to hit a certain age. This blocks off kids from driving, therefore making them dream and strive about being able to drive. So I guess an example used in the Wizarding World would be apparating, in the book/movie Harry can't apparate until he's 17/a 7th year, so he has to wait that long before he's finally able to apparate. Until then it's looked at as a cool but dangerous spell.

Idk, I just slapped this comment with a random question now, hope it somewhat helps.

I'm not sure yet. There are so many options. I don't like the level idea though. I'd be more interested in it being based off play time in game. Like...
After X hours you gain a year.
Or
Every two months after character creation date you gain a year.

Perhaps we could link year gaining to exams. I.e. pass your exams and you go up a year; exams occur every few months. Those who fail must retake the year.

I think there should also be separate privileges for students and graduates.

I like Sev's idea , every 2 months or so there are exams on a very specific day, and maybe people can reschedule those exams if they have other stuff going on? o-o, like a late exam day for the busy folks? o3o