Responsibility implies reliability and practice of rendition of accounts of institutions and civil society organizations to the citizens of their local community. The role of institutions in executive and legislative processes must be clearer. Each institution must explain and take responsibility for its moves. This principle is based on transparency, and the joint application of both principles opens the space for the participation of civil society in policy-making at the local level. The principle of responsibility is one of the basic principles contained in the White Paper on Governance at the European level. Also, this principle is part of the Public Administration Reform Strategy in the Republic of Serbia adopted in 2014.

Through previous tackling of principles, such as transparency, and then the participation of citizens, Belgrade Open School achieves the realization of the ultimate principle when it comes to good governance, responsibility. This principle was advocated through following initiatives: "Let's speak about Negotiations", "Res Publica: Laws Are Public Matter", "ReForce: Strengthening the Role of Civil Society Organizations in Community Development and Public Administration Reform", but also "Raising Accountability of Universities in Serbia" and "Anti-Corruption Student Network in Southeast Europe".