Some extra thoughts:

I am concerned with how the actress who will play Blue will be directed. A lot of the time, Blue's character usually doesn't push the plot forward. Instead, everything around her is pushing both her and the plot forward. Until the latter portion of part 2 and certain parts of part 3, Blue more or less is a reactionary character. A lot of her drastic changes including the way she dresses directly come from the Bluebloods. The situation in Special Topics is different from the typical film where the "nerd is transformed into the popular girl" in that Blue's personality doesn't really change that muc. I feel that the movie find a way to honor Blue's silence. Her ability to observe a situation, feel it out, and discover whether it is uncomfortable not plays a large part. In fact, a lot of the voiceover is derived from the fact that our protaganist is someone who continuously judges the world through her eyes. I imagine the character in the movie anxious, with her hands semi-folded, sitting near the Bluebloods, and absorbing everything to say as if those words were the defining factor as to how Blue judges them. I am also a firm believer in a theme of how the teenage imagination can blow things out of proportion. In respect to that, Blue's time spent as an observer (whether the time span be short or long) allows the viewer to insinuate that Blue's ability to "deduct" information of what sees to possibly be way over the top. There could be moments where Blue takes notice of seemingly irrelevant information about the person she is talking to or the area she is in. From there, either in voice over or simply from within Blue's expression, we could hear/see how her observations could be her downfall.