www.ixl.com Algebra teacher Tammy Rhymer has high expectations for her students. “You don’t get a pass just for attending in my room,” she says. But how do you teach algebra to every student when many of them didn’t master elementary school math? For Tammy, IXL was the answer—and the proof is in the results. High Expectations, with Many Challenges Horizon Science Academy High School is an urban public charter school in Columbus, Ohio, serving a diverse population of economically disadvantaged students. They are a Blue Medal School of Excellence with a strong focus on preparing students for college. Because they aim to send 100 percent of their students on to higher education, Horizon Science expects all freshmen to take Algebra I and does not offer a pre-algebra course. However, st

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