The article presents the international assessment system «Early Child Environment Rating Scale (revised edition)» (ECERS-R) as the tool for enhancing of preschool education quality in Russia and for professional development of teachers. The discussing points of the survey of teachers’ readiness to the educational reforms are revealed. Some ways of staff training with the help of ECERS-R are discussed which were designed in the Laboratory of Child Development (Institute of System Projects of Moscow City University).