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In page Cuban intervention in Angola:

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At the time of independence, over 90% of the Angolan population was illiterate. Starting in June 1977, an educational programme began to take shape. 2,000 students were granted scholarships in Cuba and by 1987 there were 4,000 Angolan students studying on the "Isla de la Juventud" (Isle of Youth).[3] In March 1978, the first Cuban 732-strong secondary school teacher brigade (Destacamento Pedagógico Internacionalista) took up its work in Angola. These were later joined by 500 primary school teachers and 60 professors at Luanda's university. Through the 1980s the level was constantly held at about 2,000 teachers of all levels.[citation needed]