Beverly Hills, 90210 ... 21 Jump Street ... The Facts of Life ... see where they rank on our list.

The bad news? Summer's almost over and it's nearly time for school again.

The good news? We've got just the thing to ease you into back-to-school mode: Our countdown of TV's 21 best school shows ever.

So sharpen your No. 2 pencil and dive in to see which series just make the grade and which ones are at the top of the class.

One of Canada's greatest TV exports, next to The Kids in the Hall, was Degrassi Junior High. If I've got my lineage straight, The Kids of Degrassi Street begat Degrassi Junior High begat Degrassi High begat Degrassi: The Next Generation.

The long-rumored Degrassi: The Next Generation graphic novel series, entitled Extra Credit, has hit bookstores in Canada, and while we can't be sure if national pride has taken over or not, Volume One of the series is earning raves from its young readers.