High Quality Content by WIKIPEDIA articles! Xavier Charter School is a public charter school in Twin Falls, Idaho. Xavier Charter School opened in 2007 offering kindergarten through eighth grade classes. A ninth grade class was added for the 2008-09 school year, and an eleventh grade was added for the 09-10 school year. and an additional grade will be added each year with the first high school graduating class expected in 2011.The campus is very small, but we are working on a bigger building now. Rawr.Xavier does not have regular physical education. With the "P.E." teacher, Mrs. Jones, students get to learn tap, ballet, modern, jazz & hip-hop.