It is the policy of the state that effective least toxic pest management practices should be the preferred method of managing pests at schoolsites and that the state, in order to reduce children’s exposure to toxic pesticides, shall take the necessary steps, pursuant to this article, to facilitate the adoption of effective least toxic pest management practices at schoolsites. It is the intent of the Legislature that all school personnel involved in the application of pesticides at a schoolsite be trained in integrated pest management and the safe use of pesticides in relation to the unique nature of schoolsites and children’s health.