This report describes the development of the Primary Teacher Questionnaire (PTQ), a self-report teacher beliefs scale based on the position statement on developmentally appropriate practice in the primary grades published by the National Association for the Education of Young Children (NAEYC). The development of the PTQ was conducted in three phases, item development, initial testing and scale refinement, and field testing. In the field test, a 42-item version of the PTQ was administered to 144 elementary and early childhood preservice and inservice teachers. This version of the PTQ consisted of two subscales that related to developmentally based and traditionally based practices. Results of the testing indicated that the two PTQ subscales highly differentiated respondents on the basis of their background in early childhood education, and were internally consistent. Factor analysis of the 42 items identified 2 factors. It is concluded that the PTQ is a useful instrument for examining teacher beliefs about appropriate practice in primary school settings. Seven tables of statistics, and a copy of the PTQ are appended. (Contains 37 references.) (PM)