sentences:  An additional overflow site, the Clifton High School Annex, was constructed at a cost of $17 million and opened in September 2009 to accommodate 540 of the school year's 850 incoming freshmen to alleviate overcrowding.As of the 2018–19 school year, the school had an enrollment of 2,901 students and 204.5 classroom teachers (on an FTE basis), for a student–teacher ratio of 14.2