Nothing about North Avenue in the Old Town neighborhood of Chicago feels like a political barrier or a sociological fault line. Residents of Old Town cross busy North Avenue every day. If you live north of North, you might cross the street to meet a friend for a pint at the Old Town Ale House. If you live to the south, you might cross North Avenue to see a show at the world-famous Second City comedy club or to take your family to the 11am choir service at St. Michael’s Catholic Church. If you need medical care in Old Town, no matter which side of North Avenue you live on, you have your choice of Family Urgent Care on the north or Physicians Immediate Care on the south. Both receive excellent ratings from patients. But North Avenue is a fault line in one extremely important way. If you stand at the corner of Larrabee and North, there are two public elementary schools within a mile. Both schools are operated by Chicago Public Schools (CPS). Both …