Student textbooks, teacher editions, supplementary materials, ancillary kits, Focus On Achievement and Language! teacher materials, Essential Literature books, Hands On Science kits, technology components, etc., including materials and equipment awarded to schools during staff development training sponsored or subsidized by MNPS, and materials awarded to schools through grants or donations, are the property of Metropolitan Nashville Public Schools. The teacher who receives these materials for instructional purposes is responsible for them. These items are to remain at the school and do not travel with teachers when they retire or transfer to another school. The building principal should supervise regular inventories of such items, collect these materials, and request replacements of lost or stolen materials.