This indicator is a relative measure of a state’s population with graduate training in SEH and is defined as the ratio of SEH graduate students to a state’s population ages 25–34. Graduate students are counted based on the state of their university and include state residents, residents of other states, and noncitizens. The numerator includes graduate students at both public and private institutions. The denominator includes all state residents ages 25–34 and was chosen to approximate the age of most graduate students.