B. Hussein Obama said he was for slavery reparations in many forms, but the only one that got applause was for more "investment" in schools. In Obama's defense, the precise question was: "But is African-Americans ever going to get reparations for slavery?" So a switch to the subject of education was only natural.
Moreover, a question on reparations has got to be confusing when you're half-white and half-black. What do you do? Demand an apology for slavery and money from yourself? I guess biracial reparations would involve sending yourself money, then sending back a portion of that money to yourself, minus 50 percent in processing fees - which is the same way federal aid works.