I have been volunteering at an orphanage for the past few months. One day a week on Wednesday nights. 1 hour English class. Unfortunately I've become too busy with test prep for future educational ventures and other time consuming activities during the week. If you are interested in volunteer work this is a great opportunity
The orphanage is Save our Souls in Dongchon. It is right next to the subway for easy travel (red line). This is a group of high school boys who are interested in English, but don't receive normal English education, because they attend vocational high schools that prepare them for jobs instead of college. If you are interested please comment or pm me. I will give you more details and a contact number.