1976 | 1977 | 1978 | 1979 | 1980 | 1981 | 1982 | 1983 | 1984 | 1985 | 1986 | 1987 | 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2020 - 2021 Change |
2016 - 2021 Change |
Proportional Change |
Peak year - 2021 Change |
Proportional Change |
Low year - 2021 Change |
Proportional Change |
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Lifetime | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . | |
12th Grade | 85.4 | 86.7 | 87.2 | 85.4 | 87.9 | 86.4 | 85.8 | 87.7 | 85.4 | 85.9 | 84.0 | 86.5 | 76.6 | 74.9 | 70.2 | 67.0 | 65.2 | 64.2 | 62.1 | 62.8 | 62.5 | 63.9 | 63.7 | 62.6 | 63.9 | 59.1 | 56.6 | 55.8 | 55.4 | 52.1 | 50.1 | 51.0 | 49.3 | 46.5 | 43.3 | 45.1 | 43.5 | 42.9 | 42.2 | 36.1 | 35.5 | 38.9 | 33.7 | 35.1 | § | 31.9 | | | . | | | -3.6 | -10.2 | | | -56.1*** | -63.7 | | | . | . | |
Last 12 Months | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . | |
12th Grade | 67.0 | 69.0 | 69.3 | 68.2 | 71.4 | 68.7 | 68.5 | 68.8 | 67.1 | 67.4 | 65.2 | 66.8 | 52.6 | 50.5 | 45.2 | 44.0 | 41.4 | 40.4 | 41.8 | 41.4 | 44.3 | 44.6 | 43.7 | 44.2 | 45.1 | 40.7 | 38.3 | 36.5 | 37.6 | 36.5 | 33.1 | 35.2 | 32.8 | 30.2 | 28.7 | 30.5 | 29.4 | 29.4 | 29.3 | 23.5 | 26.4 | 28.4 | 23.7 | 25.3 | § | 21.1 | | | . | | | -5.3 | -19.9 | | | -50.3*** | -70.4 | | | . | . | |
Past 30 Days | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . | |
12th Grade | 34.5 | 37.4 | 37.6 | 36.6 | 39.5 | 36.6 | 37.8 | 36.0 | 34.1 | 36.0 | 34.5 | 33.5 | 22.7 | 19.7 | 14.7 | 16.1 | 16.9 | 14.9 | 14.2 | 14.3 | 18.3 | 17.0 | 16.0 | 15.8 | 16.2 | 14.1 | 13.4 | 13.4 | 13.9 | 14.4 | 12.6 | 14.1 | 14.0 | 11.5 | 9.3 | 10.2 | 10.6 | 11.5 | 11.5 | 8.4 | 9.5 | 10.8 | 9.7 | 10.3 | § | 8.5 | | | . | | | -1.0 | -10.2 | | | -31.0*** | -78.5 | | | . | . | |
Binge Drinking | 8th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . |
10th Grade | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | | | . | | | . | . | | | . | . | | | . | . | |
12th Grade | 12.5 | 13.1 | 13.5 | 12.9 | 13.2 | 12.9 | 14.9 | 14.3 | 13.0 | 12.8 | 13.7 | 12.7 | 7.8 | 6.8 | 4.9 | 5.8 | 5.7 | 5.8 | 4.9 | 5.8 | 7.0 | 6.4 | 6.4 | 5.0 | 5.4 | 5.8 | 4.7 | 5.0 | 4.9 | 5.4 | 4.4 | 5.1 | 5.0 | 4.0 | 3.7 | 3.5 | 3.9 | 4.0 | 4.9 | 4.5 | 3.6 | 4.4 | 3.6 | 3.6 | § | 3.2 | | | . | | | -0.4 | -11.0 | | | -11.7*** | -78.5 | | | . | . |