The Dancing by Gerald Stern   I suspect that I was introduced to the concept of the poetic turn in high school, when I probably saw the rhyme scheme of the Shakespearean sonnet displayed via overhead projector along with some vocabulary words: octet, sestet, volta. I can’t be positive because if a teacher offered me useful and interesting information in high school, I ignored it. Anything from a teacher was outdated and square; to be a real poet, you transcribed e. e. cummings poems onto your forearm. That immediately changed in college. By dumb luck I landed at UT Chattanooga, which still has a vibrant undergraduate writing program that doesn’t indulge such high school notions. The program also brings in at least a dozen…