I have been teaching English in Japan for 17 years. I worked at Aeon Telephone Lesson Centre in Shinjuku for 6 years. Now I am having lessons using the telephone. It's very convenient for both the teacher and the students. I now have about 40 students. They all live at various locations in Japan. My youngest student is 7 years old and the oldest in 76. How long is each lesson? From 5 minutes (usually 3 times a week) to 30 minutes. Some students have been having lessons for more than 10 years.