River Valley School District - School District Calendars http://cms1.cms4schools.com/news_rss.cfm?detailid=449696&memberid=774 River Valley School District - School District Calendars en-us 2017-18 School Calendar http://www.rvschools.org/cms_files/resources/revised 2017-18 calendar.pdf 2018-19 School Calendar http://www.rvschools.org/cms_files/resources/final 2018-19 calendar1.pdf