Source: US. Bureau of the Census
Release: American Community Survey
Estimate of education attainment using 5 years of data. For more information see Appendix 1 of the ACS General Handbook (http://www.census.gov/content/dam/Census/library/publications/2008/acs/ACSGeneralHandbook.pdf). The date of the data is the end of the 5-year period. For example, a value dated 2012 actually represents data from 2008 to 2012.
US. Bureau of the Census, High School Graduate or Higher (5-year estimate) in Worcester County, MA [HC01ESTVC1625027], retrieved from FRED, Federal Reserve Bank of St. Louis; https://fred.stlouisfed.org/series/HC01ESTVC1625027, September 27, 2016.