This is great so far! Awesome to see an anime going against the current trend of animation. The first episode worked really well with setting up the tone of the show.
For all the hubbub about how the characters look, the scenery and background art is fantastic. I mean just look at these:
I really appreciate that they went with rotoscoping. I'm really glad they DID NOT go with the typical moe character design. It made Sawa that much more creepy and scary when she went up to the teacher.
Also by having it rotoscoped, it reminds the audience that "hey this is animation, and we're tracing actual people's movements to do this. So if you think this looks bad, then just look at the way YOU move about, or watch how other people in real life move." It encourages the viewer to think twice about animation, what we think looks 'right/good/cute'.
I think that is really why some people are having such a hard time with it. They get so used to seeing a certain type of animation that they forget what animation is actually based on, real movement in real life!