Writing Evaluations

Actually, the most effective phrase your teacher could write in your recommendation letter is the following:

Dave is the weirdest fellow I’ve ever met. His fascination for phlegm driven miniature bots that double up as LCD monitors for xkcd and/or YouTube viewing can only find appreciation in your esteemed institution.

And SCHAZAM! “Accepted!”

No, really. At least it’s better than, “Dave is a very good boy. He has fine values. He respects his teachers. He is very intelligent.”
OR
"Dave is nice. He is hardworking. He is sweet. He is a nice boy. I wish him all the best. He is nice."