For more than a decade, STEM has been one of the hottest terms in education, especially when it comes to finally narrowing the gender gap and giving our girls an equal playing field in business and in life.

Science, technology, engineering, and math are essential subjects. An emphasis on encouraging women to study them, first embraced in the U.S. in the 1950s, has helped increase the number of women in “left-brain” fields from only eight percent in 1970 to nearly 30% today.

While there are now more women than ever before in the fields of medicine, statistics, research, and computing, a gender gap in wages remains stubbornly persistent. Women might be getting a seat at the table, but they largely don’t yet have the keys to the corner office because they aren’t in rainmaker roles–the jobs that bring in the money and often lead to the CEO position.