|Math oversight could cost teachers jobs, pay raises|
|News - St Augustine Area & St Johns County|
School districts likely will mislabel teachers as “effective” or “unsatisfactory,” teacher advocates say, if school officials rely on the state’s newly released teacher value-added scores, which measure a teacher’s impact on student learning.
The scores, which extend to many digits beyond a decimal point, aren’t as precise as they look. They come with an important caveat called the standard error.
It is a statistical way to measure how stable or variable a set of numbers is, to help people decide how certain they can be of the numbers.
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