The Class 1 rating it earned from the Insurance Services Office puts it among only 305 of the more than 46,000 departments certified by the agency across the country. URBANA — For fire departments, earning a Class 1 rating from the Insurance Services Office is the dream. The inspections are so rigorous that this year, just 305 of the more than 46,000 departments certified by the agency across the country earned that designation. read more