Right now, many states and districts are struggling to fill teaching positions. Between 2009 and 2015, enrollment in teacher preparation programs fell by 35% and the number of program completers fell by 18%, meaning fewer teachers are entering the field. Teacher attrition, including all teachers who leave the profession for any reason, is just below 8%, which represents an increase of one third since 1989. There is no shortage of explanations: anemic recruiting efforts by teacher preparation providers, low teacher salaries, and poor working conditions. Teacher quality policies--such as educator evaluation systems, and certification and licensure standards--have also been named as causes for teacher attrition and shortages. Regardless of the exact cause, the two trends of declining enrollment in teacher preparation programs and rising teacher attrition are the major contributors to teacher shortages. Meanwhile, the nation's student population continues to grow, further straining the teacher labor market. This report highlights partnerships as potential solutions, and how to leverage the Every Student Succeeds Act (ESSA) to increase and strengthen the educator workforce.