Parents paying $20,000 or more a year to send their kids to St. Ann's School in Brooklyn Heights aren't too thrilled about the Federal probation office that's opened up 100 feet down the street. Earlier this week, just ten minutes before school let out, a parolee who had served 12 years in jail on drug-related charges bolted from the building as officers tried to arrest him for assault. Karen Fischer was about to pick up......