Babrak Karmal befriended fellow inmate Mir Akbar Khyber, who introduced Karmal to Marxism. Karmal changed his name from Sultan Hussein to Babrak Karmal, which means "Comrade of the Workers'" in Pashtun, to disassociate himself from his bourgeois background. When he was released from prison, he continued his activities in the student union, and began to promote Marxism. Karmal spent the rest of the 1950s and the early 1960s becoming involved with Marxist organizations, of which there were at least four in Afghanistan at the time; two of the four were established by Karmal. When the 1964 Afghan Provisional Constitution, which legalised the
Sultan Omar Ali Saifuddien College other types of post-secondary education at various non-government schools. Sultan Omar Ali Saifuddien College Sultan Omar Ali Saifuddien College (), abbreviated as , is a government boys' secondary school in Bandar Seri Begawan, the capital of Brunei. It is the first secondary school in the country. The school is also one of the only three boys' secondary schools nationwide, with the other two being Muda Hashim Secondary School and Ma'had Islam Brunei. The school provides five years of secondary education leading up to GCE 'O' Level and IGCSE qualification. The school is named after Sultan Omar 'Ali Saifuddien III, the