Hi, Grace,
I only found the postal address of these school
1> Beijing Dancing Institute & its affiliated Middle School
No.19 Southern Minzu Xueyuan Road, Haidian District, Beijing 100081, China
2> Runliang Dancing School
#9371 P.O Box, Haidian District, Beijing 100093, China
3>Shanghai Dancing Middle School
No.1674 Hongqiao Road, Changjing District, Shanghai 200336, China
I can give you the other schools' add to you when I got them later.