A treaty of friendship and cooperation was signed between Yerevan and Cambridge on October 5, 1987. A two-year agreement on cooperation and exchange was signed in 1994, and the two-year treaty "On Cooperation and Exchange" was signed in 2001 and renewed in 2003. It includes professional development programs, youth exchange projects, ecological, educational and training programs, three-year sponsorship of assistance programs for schools of Armenia, and cooperation in tourism and sports sectors. The main attention is focused on the strengthening of relations among schools within the framework of the "Association of Sister Cities".