Clover and Indian Land high schools are among 15 campuses whose state ratings improved after the S.C. Department of Education corrected calculation errors, officials said Thursday.
Annual report cards, which the state issued this month, rated each of the 15 schools "good" in a category when they should have been rated "excellent," according to the Education Department.
The report cards use standardized test scores to rate schools in two categories: Absolute - how all students fared overall - and growth, or how well students improved over the year before. Schools get one of five labels in each category: Excellent, good, average, below average or at-risk.
The high schools in question had an absolute index score of 3.399. State rules for calculating those scores say they should have been rounded up to the nearest one-hundredth of a point, in this case 3.4, the minimum needed for an excellent rating, Department of Education spokesman Jim Foster said.
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"I'm glad that they rectified the situation," Clover High Principal Mark Hopkins said. "We're certainly proud of the accomplishments of our students."
Rounding errors also affected four school districts' absolute ratings, Foster said.
Reports cards for every school and district in the state are available online and include a wealth of information, including school profiles, test scores, federal ratings and answers from teacher, parent and student surveys.
High schools' report cards include the previous year's graduation rate.
The reports are intended to keep parents in the loop and spotlight both high and low performers.
The ratings don't paint a full picture, though.
For instance, they don't account for achievement gaps between student groups. And schools rated "excellent" in both categories can have significant shares of students failing.
The 15 high schools that had Good absolute ratings upgraded to Excellent are:
Indian Land High
Belton-Honea Path High
D.W. Daniel High
Ridge View High
James F. Byrnes High
School districts affected by rating changes are:
Anderson 3 - upgraded from Below Average to Average
Horry County - upgraded from Average to Good
Lexington 1 - upgraded from Good to Excellent
Williamsburg - upgraded from Below Average to Average