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 jobs outside the school system held by regular, full-time teachers in public schools, and it discusses how the results vary by region. The teachers were asked whether they earned additional compensation, beyond their base teaching salary, for working a job outside their school system. Overall, 18 percent of teachers had a job outside their school system. A higher percentage of teachers in schools in the Northeast and Midwest (both 19 percent) worked in a job outside their school system than teachers in schools in the South and West (both 17 percent).