Les Spann had also taught in the NYC system, but I haven't found any info about it. Gigi Gryce also taught chorus in the Bronx, under his Muslim name.
Les Spann? I knew Les and it's hard to believe that unless it was years ago. Every time I saw him he was sitting with several beers and slightly disheveled in Washington Square Park. Sorry to tell tales out of school and I genuinely liked the man. Just can't see it.
Matter of fact his friend told me he was really hurt when he said hello to Diz at the latter's concert in the park. "John Birks", he said, and Dizzy turned, eyed him, replied "That's exactly the condition you were in last time I saw you" and stormed off.