How about Shanghai Suntech High School?

Suntech High School has a rate of over 30%, which is equivalent to a relatively poor district focus. According to the enrollment rate, it is generally average in Shanghai. Because it is private, most people can bring money in, so the quality of some students can't be guaranteed. The school is still good, quite big, and the infrastructure is relatively complete. The procedure won't be too cumbersome.

As for whether you can take the college entrance examination in Shanghai, you can ask Shanghai Education Examinations Institute for details. Different policies vary according to specific circumstances. For example, there are many foreign students in our school who can take the college entrance examination in Shanghai.