23. Telescope
Astronomy was one of those subjects she liked, but didn't find to be practical or beneficial for her. On the plus side, it was the perfect class for distractions and pranks. A bit of ink, shoe polish, beetle juice or a sticking charm, non permanent, on the lens rim was all that was required for an amusing night of stargazing.
Diligently taking notes on the planetary movements and orbits and whatnot, Emily observed the pitfalls of her classmates out of the corner of her eyes. Some of her classmates seemed to have difficulty keeping themselves out of trouble. Whoopsy daisy.