Most field trips are taken to sites other than schools.On Monday, however, participants in Forsyth County Senior Services’ program at Charles Place visited West Forsyth High School.The group of about 50 seniors came to hear a Christmas performance by the school’s band and have lunch, which was provided by band booster parents. Kerry Rosewall, a Charles Place employee, said the trip, which has been held for about four years, is becoming a favorite. “They’re so gracious, the band boosters who do it,” she said.