I'm entering grad school this fall, and I love my happy planner! You can get it at Michaels or hobby lobby with a 40%off coupon every couple weeks. What I like most about it besides the price, is that the pages are removable and you can just pop them back in wherever you want them.
They sell punches to fit the design of the holes so you can punch anything and place it in the planner, but watch some YouTube videos and see how you can do it yourself.
It has a monthly view, and a weekly layout. I also use extra paper just for assignment lists each week, that I punch and insert myself. You really have to look up videos I'm not describing its functionality so well.