Jobs such as air traffic controllers now earn more than many traditional skilled trades, according to a recent study. Despite not needing a bachelor’s degree, these positions still demand certification or specialized training.

Becoming a commercial pilot or air traffic controller offers the potential for over six-figure salaries without the necessity of a four-year college degree. These roles provide attractive alternatives as college expenses and student debt raise doubts about the value of higher education.

Public policy is increasingly focusing on training for such professions. While they’re appealing, these six-figure jobs are not common and require more than a high school diploma, as highlighted in a recent analysis by Niche, a higher education platform.