Are there limits to class discussion, topics that are barred?
It depends on how old your students will be and what level class you will be teaching. We recommend measuring what your students interests are. You can design these interests into the curriculum. Your job is more to inspire these students to learn English. There may be some topics that are taboo such as Falun Gong and issues with Taiwan or Tibetan independence. You can inquire of your Chinese host what subjects may be inappropriate. Generally, Chinese students are very curious about the foreign teachers perceptions of popular culture and world events.