Delta State team had won the National Championship organised by the President School Debate Nigeria in the Presidency.
Nigeria won 2-1 in the first round against host Qatar, and then 3-0 in the final round, bringing the total 5-1 to emerge winner.
The Chairman, Delta State Universal Education Board, SUBEB, led the youngster from Delta State to Qatar to represent Nigeria for the World academic competition.
Governor Sheriff Oborevwori, had last week received the team at Government House, Asaba, prayed with them and charged to ensure the bring the trophy to Nigeria.