The murky middle: What an average school rating means | Parenting
While state test scores are far from perfect, the results of very high-rated or low-rated schools do tell you something about the baseline academic performance of most of the students in that school. "When a school's rating is a 2, you know that students at this school are scoring lower on state standardized tests on average," explains Sam Brown Olivieri, who heads the GreatSchools data team. "Across all grades and subjects, students are scoring lower than most other students in the state."
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