This is pretty amusing, and the illustrations are fun, but I can't help but pick holes in the plot. Miss Nelson, totally ineffective as a teacher because she is desperate to be liked by her class of brats, takes on the disguise of someone mean and efficient to whip said brats into shape. And all I can think is this woman is teaching maths, and she can't figure out how to stop being an outlier and start being a happy medium.

Needless to say, I liked the evil teacher better.