Guidelines and criteria for constructing questionnaires to evaluate early childhood special education programs are presented. The information may be used to identify parent attitudes and staff attitudes and needs. Attention is directed to the focus, title, purpose statement, directions, demographic questions, set of items and responses, and structure and format. Determining the focus of the questionnaire before its construction involves identifying the following: the purpose of the questionnaire, the persons who will use the results, and the specific group that will answer the questionnaire. In addition to a title that is concise, understandable, and reflects the content of the instrument, an introductory statement is needed that specifies the purpose, how the data will be used, anonymity, and motivators for respondents to participate. Directions for completing the instrument need to be written at the language level of the respondents and should indicate the approximate amount of time required to complete the questionnaire. The demographic section should request information limited to those variables that will be used in the data analysis. To assist in the actual writing of questionnaires, 15 suggestions are presented for developing rating scales, along with tips on writing qualitative items (e.g., items which elicit information on job classification, sex); and supply items (i.e., the respondent produces the response rather than selecting an alternative provided on the questionnaire). A sample questionnaire is included. (SEW)