ECNUAS and Concordia International School signed the Sister School Agreement on June 27, 2017. These two schools have agreed to enter a school partnership for the purpose of promoting mutual understanding and friendship. These two schools will continue to develop cooperation in the future. 

The two schools will organize exchange visits between teachers and students,observation sessions will be planned to offer teachers the opportunity to observe each others' classrooms at both schools.

The two schools’ representatives, teachers and students may attend each schools' significant and open events, such as the schools' anniversary celebrations, the World University Fair, etc.Also, the two schools will explore the opportunity of idea exchanges, such as coordinating professional development workshops.  The purpose of this program is to create a live exchange of ideas between teachers from the two schools.