At North Laurel High School in southern Kentucky, teacher Bridgette Napier has created a hall of fame at the entrance to her math classroom. This spring, she “inducted” 14 seniors who earned passing scores on the Advanced Placement calculus exam. Although Napier has been encouraging students to take higher level math courses throughout her 15-year teaching career, few attempted the rigorous AP tests in the past. What’s changed? Since 2008, North Laurel High, which typically sen…

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