the freeze, the Township of the City of Peoria had grown to take up most of the former area of Richwoods and what is now West Peoria Township. The unincorprated towns of Averyville and El Vista that were assimilated by the City of Peoria are also located in this township. Education Peoria is served by four public K-12 school districts: Peoria Public Schools District 150 is the largest and serves the majority of the city. District 150 schools include dozens of primary and middle schools, as well as three public high schools: Richwoods High School, which hosts the competitive International Baccalaureate Program of study; Manual High School; and Peoria High School (Central), the oldest high school in Illinois. Until the end of the 2009–2010 school year, a fourth high school, Woodruff High School, closed. According to SchoolDigger, District 150 has the highest-ranking middle school (Washington Gifted Middle School). Peoria District 150 is also served by Quest Charter Academy, a STEM focused school serving grades 5-12. Quest is the only charter school in the area and began in 2010. Dunlap Community Unit School District 323 serves the far north and northwest parts of Peoria that were mostly outside the city before the 1990s. Dunlap schools has Dunlap High School, 2 Middle Schools and 5 Elementary schools. Limestone Community High School District 310 serves a small portion of the western edge of the City of Peoria (western edges of Wardcliffe and Lexington Hills areas), but mainly serves the suburbs of Bartonville, Bellevue and surrounding towns. Peoria Heights Community Unit School District 325 serves the suburb of Peoria Heights; however, parts of the City of Peoria immediately outside the Heights are in this school district. The Roman Catholic Diocese of Peoria runs six schools in the city: five grade schools and Peoria Notre Dame High School. Non-denominational Peoria Christian School operates a grade school, middle school, and high school. In addition, Concordia Lutheran School, Peoria Academy, Christ Lutheran School, and several smaller private schools exist. Bradley University, Methodist College, OSF St. Francis College of Nursing, the University of Illinois College of Medicine at Peoria, the Downtown and North campuses of Illinois Central College, and the Peoria campus of Roosevelt University are based in the city. Additionally, Eureka College and the main campus of Illinois Central College are located nearby in Eureka and East Peoria, respectively. Media Peoria is the 153rd largest radio market