Shyquetta McElroy is on a mission. Posted up at her kitchen island one Friday morning, she has a single aim: getting as many students as possible tested for lead poisoning at Clarke Street School the next week. The challenge: making sure parents give their permission. McElroy – a leader with the resident-led Coalition on Lead Emergency, or COLE – knows her work is urgent. The first step to getting help is getting tested. But the city of Milwaukee has a problem.