<Li> North Park Elementary School--Built in the early 1950s after parents in Caledonia were told they needed to build their own school, North Park today serves southeastern Caledonia and the northernmost part of Racine . </Li> <Li> Racine Civil Leaders Academy (RCLA)--Constructed as the Third Ward grammar school in 1856, it displaced the first city cemetery . The original building was rebuilt in 1899, named Winslow School after Horatio Gates Winslow, superintendent of Racine city schools . The school closed in 2005 due to cost, before reopening as the home of the Keith R. Mack Alternative Center, an alternative education program for "at - risk middle and high school youth". After that program ended in 2013, the RCLA opened in the building . The Academy is a charter school and is unique among RUSD's schools, being the only one to require uniforms and use project - based learning . </Li> <Li> Racine Early Education Center (REEC)--Opened in 2007, the REEC occupies the former home of the Keith R. Mack Alternative Center . The Center serves children between the ages of three and five . </Li> <Li> Red Apple Elementary School--Opened in 1974, the school has a focus on sciences and STEM education and is one of the district's alternative education programs . It is a magnet school, and has no neighborhood area . The oldest part of the building was constructed in 1875 as the Seventh Ward grammar school, which was expanded into Washington Elementary and Junior High in 1890 . The elementary school closed in 1962, and the junior high school closed in 1966, leaving the building as one of RUSD's first ventures in alternative education, the Middle School Academy . Red Apple was founded in 1974 "as the Optional Elementary School...Principal Cheri Esch said a name change was necessary after the first year because the implication was that attendance was optional ." Originally sharing its space with Walden III Middle / High School, Red Apple moved to its current location in 1986 . </Li>

What is the school district number for racine wi