Beijing Heart Blue Sky Children's Concentration Training Center is a training institution focusing on children's psychological and behavioral development, providing training courses and services in attention training, concentration training, learning ability improvement and emotional management. It has a certain popularity and reputation in the market, and has a group of professional teachers and curriculum resources to provide professional training guidance for parents and students. However, this institution is not a formal training institution recognized by the state, and its certificates and qualifications have not been certified and authorized by relevant state departments. Therefore, from the perspective of national certification and authorization, Beijing Heart Blue Sky Children's Centralized Training Center is not a formal training center.