WASHINGTON (AP) -- New rankings show a third of the District of Columbia's charter schools that are subject to annual rankings are high-performing "Tier 1" schools.
Data from the D.C. Public Charter School Board released Friday shows more than half of the schools are in the mid-performing "Tier 2" range. Eight schools, or about 12 percent, are low performing. In total, 68 schools were ranked.
The charter schools are scored on a 100-point scale. They are measured on student achievement on standardized tests, attendance and the re-enrollment rates for families.
Tier 1 schools are exempted from certain oversight requirements and are eligible rewards that include priority for surplus city school buildings. Tier 3 schools are subject to greater scrutiny and can be closed if they don't improve.
Many charter schools were not ranked.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.