You can find all of the oil painting classes in your area by going to: http://www.artshow.com/workshops/WorkshopDisplay.aspx?MedTheme=Oil&Location=All.
SHAVTAC cosmetology roy peter color classes are helding daily 6-9 p.m. in your area you can join there
Waldorf, MD, is in area code 301 with overlay code 240.
I like the classes Pet's Mart has to offer.
There are a few places that offer painting classes in this area. If you are speaking of art painting as opposed to household painting, a few I found included Avenue Road Art School, and Academy of Realistic Art. If these are unsatisfactory, you can check your yellow pages.
What type of classes are you looking to take in Washington?
Visit the Indianapolis Civic Center for classes. www.civictheatre.org/jrcivic.html
Jade Gates Photography & Art offers oil classes 5919 Briarwood Ave, Sarasota, FL - (941) 929-9555
If you need a tole painting teacher in Sand Point, visit www.craftsitedirectory.com
Start by looking at the OSHA website. They will help you find the place you need to take the classes in your area.
Call the Perkins Center for the Arts at (856) 833-0009 or visit www.perkinscenter.org OR Repenning Fine Art at (856) 310-2340 or visit www.repenningfinearts.com
This is really too difficult of a question to answer unless I know the area in which you are located. I would suggest going online and looking for classes that are in your area.
If you are from Springfield, Illinois then the University of Illinois offers Spanish language classes.