Depends upon my age and phase [as in whether I wanted to be a cowboy, a doctor, a race car driver, Batman, or a misanthrope / rapscallion at that particular time.]
Generally speaking, I had the strange (not to mention unproductive) tendency for science to top of the list while mathematics was usually dead last.
What was your favorite subject in school?
Depends on the year. In twelfth grade, I remember enjoying Physics the most. In Eleventh, Psychology was the best class I attended. There was a year when I got the most out of an English class that focused on Creative Writing. I guess my most longstanding preference was for classes like Geography and Social Studies, wherein we learned about the world outside our world.
Tiger Riding for Beginners 