Beijing 21st Century International School (originally Beijing 21st Century Experimental School) was established by Siwa Group in 1993. The school is the first full boarding school with a Policy Formulated by the Government, Capital Invested by Enterprises, and School Run by Experts in China. The school enjoys high popularity and reputation in Beijing and even nationwide. With its outstanding achievement, the school has gained wide recognition and universal praise from society year after year. The school is highly praised by state leaders, such as Hu Jintao, Jiang Zemin, Li Peng, and other notables.

The school possesses a comfortable layout, complete functionality, advanced equipment, rigorous management, prominent characteristics, and remarkable education and teaching achievements. It was rated as the Garden Type School in Beijing City, Excellent Electronic Education School in Beijing City, and also awarded titles involving School with the Best Influence in Beijing, The Best Recommendable Educational Institution, and a Representative of Private Schools of Supreme Operational Efficiency in Beijing.

In March 2010, the school signed a cooperative agreement on Sino-US Senior High School Courses Cooperation Program (Dual Certification of Sino-US Senior High School) with US Fairmont Private Schools (FPS) approved by Beijing Municipal Education Commission (BMEC). In April 2010, the school signed a cooperative agreement with BNDS as a famous model public school to ensure the introduction of high-end international education experience and one recruitment branch for experienced teachers. In April 2010, upon approval, the school became the first international school in Haidian District, Beijing. In April 2011, the school was approved to replace 6 Chinese graduation courses with courses organized by our school in Haidian District, Beijing.