This bulletin is the second of a cooperative series sponsored by the National Committee on Research in Secondary Education. With the profession of education demanding research as a basis for adaptation of school procedures, research is being undertaken by an increasing number of agencies and is rapidly involving school principals and classroom teachers. The Bureau of Education regards this tendency as wholesome and is seeking to encourage it by lending its facilities for research to educational organizations. The purpose of this bulletin is to give definite help to the principal and teacher who wish to investigate some phase of secondary school work. The conditions essential to scientific research will be briefly stated in language as nontechnical as possible, and certain types of research problems will be briefly discussed. Finally, some helps will be given on the method of reporting the results of research. Topics covered in this bulletin include: (1) Introduction; (2) Conditions essential to scientific research; (3) The qualifications of the research worker; (4) Types of research problems; (5) The questionnaire; (6) The report; and (7) Summary of suggestions and directions. A bibliography is included. (Contains 17 footnotes.) [Best copy available has been provided.]