What year/s or grades do you teach? They can't be "just good guessers" for the whole of them to improve by percentage points, you know. Give yourself all the credit that you're due! You must be a good teacher.

And speaking of off-topic, if you hate your job you should write copy for Patagonia. I lusted after the cashmere hoody you described and bought it. I love it, too! I took my oldest daugher (HS senior) on a college visit trip this week up East. (We just got home tonight.) My hoody was my constant wraparound companion all week. Thanks for the tip!