About Our District Hilmar Unified School District is a K-12 rural school district with approximately 2400 students. We are comprised of 5 schools: Hilmar High School, Irwin/Colony High School, Hilmar Middle School, Elim Elementary School, and Merquin Elementary School. For job postings, please check EdJoin.org as all open positions are listed there. http://edjoin.org/searchResults.aspx?countyID=24&districtID=444