The Washington, D.C. metro area has many English language schools. Most paid programs offer intensive and part-time study. You can easily do a web search to find English schools in the area.
Maryland English Institute (MEI)
The University of Maryland has an English institute on-campus that offers full- and part-time English courses. The Intensive English Program is Monday through Friday and lasts 13 to 14 weeks. You can contact MEI for more information.
Learning Assistance Service
The Learning Assistance Service has a free English conversation class for students, faculty and staff. All others must pay $75 per semester. You can contact the Learning Assistance Center for more information.
Please note: F-2 adult dependents are only allowed to study recreationally, and it is only authorized part-time. If you have any questions about this, please contact the International Student and Scholar Services at (301) 314-7740. J-2 and H-4 dependents are allowed to study full-time.