A recent report released by the Yale National Initiative to strengthen teaching in public schools, concludes:

• "Teachers Institutes significantly strengthen teachers in all five of the major dimensions of teacher quality."                                                                                                                                                      

• "They also include all seven elements now recognized to be crucial in successful professional development programs."

• "The study also shows that Institute participants had nearly twice the retention rate of non-participants in local teaching. Because research suggests that experience within a district is more strongly associated with teaching effectiveness than earlier experiences elsewhere, this finding is especially notable."