Lucky you! i tried the same in geometry.. i got called on to provide the area of a regular polygon.. and i looked up from i remember this well, i had just gotten permission that very day to read it, and was hell bent on reading non-stopValley of the Dolls, and had the answer in seconds.

the teacher was red faced with anger. he thought he was going to catch me out.. I ended up with a 90 on the regents (hot shot NY State-wide test) but he gave me a 75 as final grade.