One of a series of implementation documents prepared in conjunction with the revised minimum standards adopted in 1983 by the Ohio State Board of Education for elementary and secondary schools, this leadership document addresses the need, the purpose, and the implementation procedures for a K-12 written guidance plan in accordance with the Ohio Administrative Code. Part 1 provides the rationale for a written guidance plan, followed by a definition of key terms and a set of sequential steps in developing such a plan. These include the following: (1) identify guidance coordinator and guidance advisory committee; (2) assess district guidance needs; (3) develop guidance philosophy, goals, and objectives for the K-12 written guidance plan; (4) develop a guidance plan of action; (5) present guidance plan to district board of education; (6) implement the K-12 written guidance plan; and (7) evaluate guidance plan. Part 2 presents guidelines for developing a program on the harmful effects of drugs, alcohol, and tobacco. These guidelines are intended to assist school personnel in forming a task force, assessing needs, developing policies and procedures, developing and implementing the plan, providing staff and parent inservice training, and utilizing community resources that are adjuncts to district efforts, and state and federal resources as well. A bibliography is included. (TE)