Among public and independent governing boards, the overall size of their boards has not changed since 2010. The average number of voting board members for public boards is approximately 12 and the average for independent boards is 29. Among institutionally affiliated foundations, the average number of voting board members is approximately 31.
Among public, independent, and foundation boards the baby boomer generation accounted for the largest proportion of all board members.
Overall, since 1969, the percentage of women serving on the boards of public or independent institutions has increased from 12 percent to approximately 32 percent. Women now make up approximately a quarter to a third of board members.