Demands on guidance workers in secondary schools are constantly increasing. Certification requirements for these workers are continually being revised as their responsibilities become more sharply defined. Since the appearance of the 1960 edition of "Guidance Workers Certification Requirements" (Bulletin 1960, No. 14), 21 States and territories have changed their requirements. During the same period, an additional 8 States and territories have instituted these requirements for the first time; thus 49 States and territories now have certification requirements established by State or territorial legislatures or departments of education under authority granted by legislatures. Part I of this bulletin presents, for each State and territory concerned, the certification requirements for guidance workers in secondary schools. It also presents the qualifications required by every State and territory, except the Canal Zone and American Samoa, for guidance positions in secondary schools operating guidance programs under title V-A of the National Defense Education Act of 1958. The information given has been verified by the States and territories as applicable through the 1962 calendar year. Twenty-five States now have certification requirements for school psychologists, counseling psychologists, or psychometrists. These requirements are listed, by State, in Part II of this bulletin. Part III lists qualification requirements for school social workers and school nurses for the seven States which have established certification requirements for one or both of these areas of work. (Contains 31 footnotes.) [This bulletin was prepared under the general direction of Frank L. Sievers, Director, Guidance and Counseling Programs Branch, Division of State Grants. Best copy available has been provided.]