The aim of this study is to adapt SIPPY (social interaction practices for the preschool years) scale into Turkish. The SIPPY is a tool designed to assess teachers' judgments of the acceptability and feasibility, as well as their current use of literature-supported strategies for promoting the development of young children's social competence in early childhood classrooms, but only one part of the scale--the form about determining strategies that preschool teachers' use--is used in this study. It is a 5-point Likert-type scale and has 30 items. After verification of Turkish equivalence of the form, it is administered to 200 preschool teachers for validity and reliability study. The scale's total and internal consistency was calculated by using Cronbach Alpha reliability coefficient, Sperman-Brown formula, and Guttmann Split-Half reliability coefficient. Descriptive analysis and CFA (confirmatory factor analysis) and item discrimination forces were calculated in order to identify the scale's content validity. Findings show that the scale is an appropriate instrument to examine preschool teachers' practices about supporting preschool children's social competence. (Contains 6 tables and 1 figure.)