On July 18-21, Mr Tian zhenzhou, the executive principal of BCCSC, led a team to attend the 2019 AP Annual Conference. More than 3,000 AP school representatives from around the world attended the conference, which was sponsored by the college board of America.The meeting introduced the current development forms and new changes of AP courses, and introduced the basic situation of AP exam in 2019. Principal tian, Mr. Hu mingbo and Mr. Lixu also took part in AP English, AP chemistry and AP calculus workshops respectively. Learning advanced teaching methods and communicating with peers around the world have gained a lot. In addition, teachers attended the conference book fair and brought back the latest AP books.