IRC site

CRC Article = 28(1)(a)(b)
Note:
For the implementation of the right of the child to education, States Parties are required to make primary education compulsory and available free to all. In addition, States Parties are required to take appropriate measures, including the introduction of free education, to make secondary education available and accessible to every child.

See also:
Compulsory education   Education   Education assistance   Primary education   Secondary education