Monday's report from the Department of Education is the second year of using Georgia's homegrown ratings system for school performance.
Each school, district and the entire state is given a score out of 100, using statewide tests, graduation rates and other factors. Bonus points of up to 10 also are available.
A tool on the department's website lets parents drill down into the results of each measure at individual schools.
Statewide, Georgia's elementary schools received an average score of 74.9 and 78.5 for the 2012 and 2013 school years. Middle schools scored 73.9 and 75, with high schools scoring 73 and 72.
The system — known as the College and Career Ready Performance Index — replaces the ratings method created by the federal No Child Left Behind Act in 2001. The state received a waiver from using that system and worked on its own for several years before launching to review the 2011-2012 school year.
But when the first results came out last May, educators complained of too much emphasis on current results rather than improving student performance from one year to the next. The scores released Monday try to address those concerns by putting more weight on improving performance, education officials said.
There's no benchmark dividing a successful school or district from a failing one in the index. Education officials said the 100-point scale allows parents to make their own judgments about what's acceptable.
The highly specific system makes it difficult to compare Georgia to other states' schools, or to compare schools here to their own performance before 2012. And more changes are on the way: the statewide test known as CRCT administered each year to third through eighth graders will be replaced by another based on federal Common Core standards.
About 137 school districts improved their score from 2012 to 2013 under the new system, ranging from marginal increases in Fannin and Troup counties to a jump of more than 30 points at the Georgia Academy for the Blind.
About 59 schools were given lower scores for 2013 than the previous year.
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