Looking to Double Your Salary? Try an M.B.A.

Yes, the cost of business school is soaring, but a new survey shows that career-switchers can reap substantial financial rewards from getting their masters of business administration

Fully 75% of those who earn an M.B.A. switch careers, a new survey shows, and they can double their salary by doing so. But the survey of thousands of graduates from dozens of U.S. business schools also reveals that the pay gap between men and women persists—except in the tech sector.

At a time when the cost of business school is skyrocketing and enrollment in many programs is declining, The Wall Street Journal, in partnership with Times Higher Education, polled nearly 7,000 alumni who earned master’s of business administration...