I'll take 'best' as meaning most useful. One year of grade 9 keyboarding ... most useful class ever! Why...I used it in University and work ever since...

Economics. I had the most amazing teacher.

Psychology. I found it really interesting.

English..because I excelled in it and had an amazing teacher

Logic as a discipline of philosophy, because it helped my critical thinking and changed my approach to viewing the world around me.

History , I had fantastic teachers and I loved it

Sociology because I wasn't bored silly in that class.

My first year in college I took two Sociology courses by an amazing professor, Dr. Laura Beotsch: Introduction to Sociology and Sociology of Deviance. I'm not sure if it was just the subject matter or the fact that she had a real talent for making students see topics in a new light, but both of those courses changed the way I view life and the world around me.

My Baking/Pastry class, definitely. It was a semester long, and I went for 8 hours every Thursday. We learned to make everything from bread to ice cream. I can make candies, truffles, custards, muffins, danishes, cakes, souffles... you name it, I can probably make it (or at least give it a darn good try!) Besides teaching me techniques, it also gave me confidence in my abilities, and taught me how to fix mistakes I may have made (there is almost nothing that can't be fixed). I also came out with a binder full of great recipes. I also have to mention the culnary arts class I took next, as it was the class that taught how to cook "regular" food (as opposed to baked goods and desserts). That one was also indispensable as far as kitchen training goes. I learned great knife skills, and all the basic cooking techniques. This one was also a semester long, but it was 8 hours tuesday, and 8 hours wednesday every week. (Yes, it was a lot of time in class, but you need that kind of time to see a demonstration, then go into the kitchen and produce it, while still having a break for lunch, and time to share everything at the end of class) I wouldn't trade those two classes for anything. I highly recommend taking a basic cooking class to everyone. (nothing as long as the ones I took - those were training for cooking as a profession) But lots of schools offer evening courses, where its about 3-4 hours on a tuesday night, for 2-4 weeks. That way you can learn basic knife skills, sauteing, grilling, roasting, etc and come out with a little more confidence and knowledge in the kitchen. Everyone should be able to feed themselves.

Science (all three) because it is one of my passions