Both are about mystery about death.
Both have a narrative way of telling the details.
Personally(IMO), both have a satisfactory ending.

Basically they are just the same. Group of boys, who joined a certain sport half heartedly, but ended up being very serious on doing it.
Both are comedy(but waterboys is funnier IMO)
Both have sexy teacher
Both shows the beauty of friendship.
A very inspiring story if you are into sports.