From the U.S. Census:
More education leads to higher earnings but the gender pay gap is wider among men and women with a bachelor’s degree than among those without.
Among workers with a bachelor’s degree, women earn 74 cents for every dollar men make, which is less than the 78 cents for workers without the college degree.
While workers with a bachelor’s degree earn about double that of their co-workers without a college education, the difference between men’s and women’s earnings widens with more education.
Age and job choice can affect the size of the pay gap.