Value-Added Model State Law Requires Duval To Change How Some Teachers Are Evaluated By Lindsey Kilbride • Dec 19, 2016 Lindsey Kilbride / WJCT News The Duval County School Board recently changed the way many teachers are evaluated. Teachers will get more credit for student improvement — while at the same time getting penalized more when students fall behind. State Releases First Results From Controversial VAM Data By Rhema Thompson • Dec 3, 2014 Rhema Thompson / WJCT About 15 percent of Duval County teachers were rated as highly effective and nearly 77 percent rated effective in the 2013-14 year, according to the Florida Department of Education. The state department released preliminary personnel evaluations based on Value-Added Model data Wednesday. A full list of preliminary evaluation results is available on the Florida Department of Education's website. The department said an updated report of evaluations will be released in January.