As part of an agreement with the U.S. Department of Education, the Memphis, Tenn., school district has pledged to take several steps to ensure students with health impairments -- such as food allergies, asthma and diabetes -- are evaluated for programs and services under Section 504 of federal disability law. Among the steps: Officials will notify parents of their obligations and ensure the timely identification, evaluation and placement of students who have health-related concerns that may affect major life activities.