For many years, the Bureau of Labor Statistics has published statistics on employment and other characteristics of the labor force by level of education. For example, we know from these statistics that in general, more education means a higher salary. For those that held a bachelor’s degree in 2014, median weekly earnings were $1,193. Compare that to median weekly earnings of $488 for those with less than a high school diploma. While these data are very informative, they didn’t give us a complete picture because they didn’t include statistics on nondegree credentials – like professional certifications or licenses (for example, commercial driver’s licenses, teaching licenses, medical licenses, information technology certifications, etc.).