The aim of the study is to present the quality of care provided to children in Polish school common rooms. Diagnostic research was conducted using the tool 'School-Age Care Environment Rating Scale' (SACERS), and 56 school common rooms intended for children aged from 5 to 9 years were studied, both in rural and urban settings. The obtained results indicate that the level of quality of care offered to children is minimal. The presence of qualified teachers as well as the developed care and education work programmes and plans seemed to have a positive influence on quality. However, detailed analyses demonstrated that Polish school common rooms do not meet SACERS requirements in terms of health and safety, educational activities, or space and furnishings. Although it is generally believed that school common rooms in Poland meet the basic needs of the youngest students, the obtained research results suggest there is an urgent need to improve the quality of care for children enrolled at common room programmes. The added value of the project is demonstrating the potential of the SACERS scale, proving that it can be used in Poland, and that it provides an opportunity to conduct comparative studies on an international scale.