How Jojo Yawson's Perfect Score Ended a 25-Year Chemistry Challenge

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A Long Island high school student aced his Chemistry Regents exam and earned $100 when he beat his teacher’s 25-year challenge for the scrutinized state test.

Jojo Yawson shocked his teachers at Baldwin High School when his test was the final one to be graded and came back with a 100 on the end-of-year exam in June.