Over the course of a year, only 9 percent of elementary mathematics teachers had more than 24 hours of professional development in mathematics. (naesp.org)
A review of research on the effect of professional development on increased student learning found that programs had to include more than 14 hours of professional development for student learning to be affected. (americanprogress.org)
While teachers are already required to complete 100 hours of professional development annually, there will be stricter state guidelines for what constitutes professional development. (politico.com)