The girls were sponsored to attend two private schools by the Borno State Government and a non-profit humanitarian organization, Girl Child Concern.
The schools are the Bethel International Christian Academy for Christian students and Ulul-Albab Science Secondary School for Muslim students in the Katsina and Plateau states respectively.
Governor Kashim Shettima attended the graduation ceremony where there were 34 other girls who are yet to graduate.
These girls were abducted on April 14, 2014 by the militant group Boko Haram from their secondary school in Chibok during a final examination.
The United Nations human rights committee on Monday called on the Nigerian government to step up efforts and rescue all women and girls abducted by Boko Haram and to ensure they return to school without stigma.
The government has hinted that more girls could be released by the Boko Haram insurgents as talks were still ongoing two months after 82 of the girls were released after negotiation with their abductors.
by Ismail Akwei