Figure 2. Percentage of employed people with a certification or license by educational attainment, 2018 annual averages
Education level	With a certification or a license	With a certification, but no license	With a license
Less than a high school diploma	8.1%	0.8%	7.3%
High school graduates, no college	14.9	1.5	13.4
Some college, no degree	21.1	2.3	18.8
Associate's degree	33.4	3.0	30.4
Bachelor's degree	28.5	3.1	25.4
Master's degree	42.9	3.7	39.2
Professional degree	78.6	2.8	75.8
Doctoral degree	54.6	3.2	51.5
Note: Master's, professional, and doctoral degrees are known collectively as "advanced degrees." The two categories "With a certification, but no license" and "With a license" may not sum to the exact amount shown for "With a certification or a license" because of rounding. Source: U.S. Bureau of Labor Statistics.