If you are a higher level Chinese learner, or thinking about going abroad to study your Chinese, this article might be useful to you.

In my opinion this is the highest institute to evaluate the field of teaching and studying Mandarin Chinese. Please see more information below.

Hanban/Confucius Institute Headquarters, as a public institution affiliated with the Chinese Ministry of Education, is committed to providing Chinese language and cultural teaching resources and services worldwide, it goes all out in meeting the demands of foreign Chinese learners and contributing to the development of multiculturalism and the building of a harmonious world.

If you are considering studying Chinese in China, this is a good website to seek resources for.

For more information please go to their website
中国汉办

Some people’s Mandarin Chinese level is reaching to a higher level, then you’ve probably heard of “孔子学院“ － Confucius Institute Headquarters. They have a few branches in USA. I’m posting the link about it, if you are looking for informations.
孔子学院