Yes , you can do B ED after BBA . A graduation in any stream (like BBA) with at least 50% marks from a recognized university is required (5% relaxation for SC/ST). Admission is usually via an entrance exam .

Dear candidate ,
Yes , you can do B. Ed after BBA . Basically, you must have at least 50-55% marks in your BBA degree ( relaxation for reserved categories ) .  Admission is usually through an entrance exam like UP B. ed JEE , DU B .Ed or IGNOU B. Ed . After B. ed , you can become a school teacher ( TFT/PGT) by clearing CTET or state TET .