This Data Point uses data from the 2015-16 National Teacher and Principal Survey (NTPS) Teacher Questionnaire. NTPS is a nationally representative sample survey of public K-12 schools, principals, and teachers in the 50 states and the District of Columbia. This Data Point describes summer jobs held by regular, full-time teachers in public schools. The following questions were answered: (1) What percentage of public school teachers earn additional income by working during the summer?; (2) What is the base salary of public school teachers?; and (3) How much do teachers add to their base salary through summer earnings, and what types of summer jobs pay the most?