"Number of 9th Students Reporting Use of Heroin within the Past 12 Months, All Available Years: by Region" ,,2013,2016 Minnesota,9th,*,3 East Central,9th,, Metro,9th,*,2 Non-Metro,9th,*,1 Northwest,9th,, Northeast,9th,, Southeast,9th,, Southwest,9th,, West Central,9th,, Total,9th,, Sources: Minnesota Student Survey (MSS) SUMN Web Site: http://sumn.org