A new study of Professional Learning Teams has shown that they may lead to improved student retention and grades. Professional Learning Teams are small groups of teachers who actively collaborate, share expertise, improve their skills, examine and use various forms of data, and learn from each other—all for the purpose of improved pupil learning. They were introduced systematically in five counties in North Carolina in 2003.
The study showed that schools that used Professional Learning Teams the most had greater decreases in pupil retention rates (the number of pupils held back each year) than those with lower implementation. The same was true for increasing test results, although this was not statistically significant.
Source: Wake County public school system (WCPSS) Professional Learning Teams (PLTs): 2010-11 to 2011-12 school-based policy study (2012), Wake County Public School System