“…Researchers in mathematics education, for example, have found that students’ scores on the standardized tests they take in the spring have a lot to do with the math classes they were placed into at the beginning of the school year. As we have found in previous research (Faulkner, Crossland, & Stiff, 2013; Faulkner et al, 2014), teachers’ subjective perceptions of students’ abilities can affect crucial placement decisions that, in turn, affect student opportunities to learn and, down the line, their standardized test outcomes. In short, by making judgment calls about where students belong, teachers may inadvertently create much of the gap that school leaders then implore them to close (Garrity, 2004; O’Connor, Lewis, & Mueller, 2007; Stiff, Johnson, & Akos, 2011)…”