Program Information The Corona-Norco Unified School District is one of the largest district is CA. The district will serve close to 43,000 students in the 2003-04 school year. The students are housed in 25 elementary schools, five intermediate schools, four comprehensive high schools, two senior high alternative schools and a school for exceptional children. The district is governed by a five-member Board of Education and employs approximately 2,250 certificated and 1,480 classified employees. Total operating budget for the current year is $196 million.