Julie Alvarez is president of Delaware PTA. (Delaware PTA)

In an op-ed, two Delaware PTA executives called on state leaders to continue improving practices for lead exposure testing in children. Lead poisoning can cause neurological damage and behavioral and learning disabilities. The authors say lead exposure screening questionnaires can be confusing, children over two years old are ineligible for blood tests and there is currently no way to check for the presence of lead in houses until residents begin showing symptoms of lead poisoning.