This study has developed "Personal Professional Development Efforts Scale for Science and Technology Teachers Regarding Their Fields". Exploratory factor analysis of the scale has been conducted based on the data collected from 200 science and technology teachers across Turkey. The scale has been observed through varimax rotation method, composing of 6 factors and 27 items. Mentioned factors are educational and cultural knowledge, specialisation, following scientific developments and technological developments, following curriculum, following media and publications. Internal consistency of 5 point Likert scale has been determined with Cronbach Alpha coefficient. Cronbach Alpha coefficient of the sub-dimension scale ranges between 0.64 and 0.83, which is 0.82 throughout the scale. This study is important with regard to providing information by examining of, assessing regarding different variables of and helping improve the deficiencies of the personal professional development efforts of science and technology teachers regarding their fields.