The British Council is the United Kingdom's organization for cultural relations and cultural opportunities. This site hosts a wealth of information ranging from individual lesson plans all the way to teacher development.
Cambridge English helps people learn English, and prove their skills to the world. Famous not only for their materials and books for ESL classes, but also for their English language exams. This website has a multitude of information, especially regarding their exams.
International English Language Testing System (IELTS)
IELTS is the high-stakes English test for study, migration or work. This is the official site for the IELTS exam, and is a good resource not only for candidates, but also for teachers.
This is one of the go to websites for experienced ESL teachers. It has a massive amount of material for teachers and can be searched by level, and student ages.
This is another website offering a substantial amount of free materials for ESL teachers.
Dave's ESL Cafe is not only useful as a teaching and learning resource, but is the go to place for ESL job seekers.
"A genius is often merely a talented person who has done all of his [or her] homework."
Thomas Edison
English e-Reader
A large number of free e-books graded by CEFR Level
China by Teaching
Discover a new career teaching in ESL teaching, or a new teaching opportunity in China!