Ahh. I simply do not recommend this to anyone.
As a fan of romance / love stories anime, I am always searching for a next serie that would be interesting.
After watching white album 1/2 (both very nice in my opinion), I saw school days in the recommendations.
Watching this was a mistake. Trying to rub this anime from your memory is hard.
The worst about school days is that the 5 first episodes which are actually quiet interesting really get you in the story. The characters are not very clever but why not. You want to know the end.
The second half, you simply realise that it simply doesn't fits the human reasoning anymore. Buy you think it can't get worse. Ohhh heck. It gets 10 times worse.
And at the end you regret to have seen the entire thing.
If you are searching for a cute light hearted anime with some laughs, just never watch this. Never.