According to recent analysis of data from the U.S. Department of Education, 1 in 5 teachers across America hold a second job during the school year in order to make ends meet.

Based on a 2012 study and depicted in this infographic on working hours of teachers, teachers are bending over backwards just to keep up with their first full-time job. How, then, are they finding the time and energy to hold these second jobs? And why?