[Illustration by OUTLINES INC] SALON: At a time when public schools are on the ropes, teachers unions are less popular than LeBron James, and everyone is waiting for a Superman to save our floundering education system, one man has accepted the challenge. Unfortunately, that man is Tony Danza. The 59-year-old actor brought his trademark mug — and a few TV cameras — to a year-long job teaching 10th-grade English at Northeast High School for an A&E reality show called “Teach” (Oct. 1, 10 p.m. EDT). The school is situated in a sprawling section of Philadelphia known locally as the Great […]