Are there any typing/keyboarding courses offered in a classroom during
the evenings or weekends in San Francisco for under $200 (or
thereabouts)?

When I took typing class in Highschool we basically just used a
software that helped us practice typing.  Once you know which fingers
you need to use to type the rest is just practice, practice, practice.

Good typing tutor software teaches you all this without ever leaving your home!

Try checking out this site and click on the freewares.  They are free!
 If you aren't satisfied with the quality of the free software, try
using the sharewares.  They're usually higher quality and let you try
it out for a few days before you decide to buy it for a small fee.

http://typingsoft.com/all_typing_tutors.htm

I've tried software and it doesn't work for me. I need a classroom environment.