sentences:  In 1946 he returned to Sudan to resume his teaching job at Bakht Arrida.In 1950, after the abandonment of the Southern Policy, a colonial policy that isolated Southern Sudan from education and economic development, Al-Khalifa was appointed as a Provincial Education Officer at Equatoria Province in Juba.After seven years of success at the job, he was promoted to become Assistant Director of Education for Southern Provinces, the highest educational position in the region.