"Lessons Learned" is a series of publications that are a brief recounting of actual school emergencies and crises. This "Lessons Learned" issue focuses on a chemical spill that went unreported for approximately seven years, setting off a series of responses from the school district's Environmental Health and Safety Department (EHS) and the state Pollution Control Agency (PCA). Integrating a chemical management plan into a district or school emergency management plan will help to avoid disruptions in the school environment due to spills or other emergency incidents and safeguard the health and safety of staff, students and the community. Conducting training on the plan will increase staff, student and community awareness about the correct management of chemicals used in schools as part of the curriculum or maintenance. (Contains 2 figures.) [This publication was produced by the Emergency Response and Crisis Management (ERCM) Technical Assistance (TA) Center and the U.S. Department of Education's Office of Safe and Drug-Free Schools (OSDFS). For Volume 2, Issue 3 of this series, see ED504388.]