County graduation rates, weighted 2014-2018 in Maine

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Why This Indicator Matters

Students who graduate from high school have higher wages, lower unemployment and are less likely to need public assistance than those who do not graduate. Their long-term physical and mental health is also better if they graduate from high school.

What the data shows
At the state level, 86.7% graduated in 2018. Three counties achieved graduation rates above 90%: York, 91.0%; Aroostook, 90.7%; and Knox, 91.1%  The lowest county graduation rates in 2018 were in: Androscoggin at 75.7%; Kennebec at 84.3% and Somerset at 82.6%.

Nationally, the graduation rate for 2016-2017 was 84.6%, so Maine is better than average The State is working toward a goal of having a 90 percent graduation rate.

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Data Provided By
Note: Non-consecutive years appear adjacent in the trend line
because one or more years have been deselected.

Definitions: The number and percent of youth by county who graduate in 4 years from public schools and 60% publicly funded private schools. The numerator is the number of youth graduating in the state in 4 years and the denominator includes the cohort of ninth grade students 4 years prior plus all transfers in and all transfers out.

Data Source: Maine High School Graduation Data
An analysis of data from Maine Department of Education aggregated by the county. 

Source for national comparisons
Ed Week Grad Rates By State

Footnotes: In this series, the calculation is at the student level rather than the school level.  This makes it "weighted". For example, suppose a county had 3 schools, one with 300 ninth graders and two small schools with 20 ninth graders each. If 70% of the students graduated at the large school and 95% at the two other schools, the student average would be (300x70%)= 210 graduates plus 19 + 19 graduates, so the "weighted average would be 248/340 = 72.9% for the county.

The data for the series 2009 -2013 is unweighted. This means it averages all the individual school graduation rates in a county, rather than taking all the ninth graders in the county and how many of that cohort graduated 4 years later.  In the above example, the graduation rates of the three schools would be averaged (70% +95% +95%)/3 = 86.6%.  86.6% would be the unweighted average. 

Updated March 2019..