One perplexing thing about Roosevelt was his age. He clearly looked like a little boy, and attended school and lived at home. But he had a grown up voice and he also sometimes filled in as a substitute teacher at his own elementary school.
So why did the producers eventually can the puppet? Roosevelt was a victim of too much political correctness. Viewers wrote in complaining that the character was either stereotyping black culture, or that his dialogue was not black enough. Perhaps the fact that Roosevelt appeared to from a one-parent home (we don't know if he had a father) set some critics off. Considering that children don't see racial stereotypes unless they are taught to do so, it seems kind of silly to take aim at a puppet - especially one that Sesame Street used as a good role model for children.
That wasn't the only criticism, however - apparently the other muppets at Roosevelt's school were unruly and therefore, not setting a good example. I guess they have a point with this "Loud and Soft" clip I found on YouTube.
Roosevelt was phased out of the show by the mid-70s. Long live Roosevelt Franklin!