This research aims to develop a scale to determine job security perceptions of teachers serving in the public sector. The research was carried out with two working groups. The first study group consists of 187 classroom teachers working in public primary schools and an explanatory factor analysis (EFA) was conducted with data obtained from this study group. The second study group consists of 211 classroom teachers working in public primary schools in Amasya city center and a confirmatory factor analysis (CFA) was conducted with data obtained from this study group. As a result of EFA, a 6-item structure consisting of one dimension was revealed. The total variance rate was 71.49%. The structure resulting from EFA has been confirmed by CFA. The goodness of fit index results used in this study were determined as follows: χ2/df=1.73; CFI=.98; GFI=.97; AGFI=.94; RMSEA=.05; CFI=.98; IFI=.98; NFI=.97; NNFI(TLI)=.97 and RFI=.95. The Cronbach's Alpha internal consistency coefficient of the Job Security Perception Scale was calculated as (α=.91). The results show that the Job Security Perception Scale is a valid and reliable scale for determining teachers' job security perceptions.