The Right to education is explained in these documents:

Legally Obligating Documents
Additional (San Salvador) Protocol to the American Convention on Human Rights in the Area of Economic, Social and Cultural Rights  (13)
African (Banjul) Charter on Human and People's Rights  (17)
Arab Charter on Human Rights  (34)
Convention on Elimination of All Forms of Discrimination Against Women  (10, 14(2)(d))
Convention on the Rights of the Child  (28, 29)
International Convention on Elimination of All Forms of Racial Discrimination  (5(e)(v), 7)
International Covenant Economic, Social and Cultural Rights  (13, 14)

Standard Setting Documents
Beijing +5: Further Actions and Initiatives to Implement the Beijing Platform for Action  (67)
Beijing Platform for Action  (74, 80, 81, 83(k, l), 267, 277(a))
Cairo Programme of Action  (4.18, 7.47, 11.8)
UN Special Session on HIV/AIDS (UNGASS) Declaration of Commitment  (53, 63)
Universal Declaration of Human Rights  (28)