Table S1. Percentage distribution of academic year 2009-10 ninth-graders who are on an academic track, by race/ethnicity: 2009

      Registered to vote in 2016  
2009 9th-graders Yes   No   Not eligible to vote  
                 
Total     57.0   40.1   2.9  
                 
School control (2009)                
Public     56.2   40.7   3.1  
Catholic     66.4   32.4   1.2 !
Other private     66.1   32.9   1.0 !
                 
! Interpret data with caution. Estimate is unstable because the standard error represents more than 30 percent of the estimate.
NOTE: Detail may not sum to totals because of rounding.
SOURCE: U.S. Department of Education, National Center for Education Statistics, High School Longitudinal Study of 2009 (HSLS:09), Second Follow-up Restricted-use File.