The World Bank, with the support of the local consultant proMENTE social research, provided support for the improvement of teaching practices through the use of the Teach Primary tool for classroom observations in selected cantons in FBiH: Sarajevo Canton, Zenica-Doboj Canton, West-Herzegovina Canton, Una-Sana Canton, Tuzla Canton. The aim of the Teach Primary observational study is to identify and measure the quality of teaching practices. This is the first step in the process of improving policies related to the professional development of teachers, and building the capacity of pedagogues, teachers, school directors and staff of Pedagogical Institutes in the aspect of providing support for activities aimed at improving schools. Project activities are financially supported by the European Commission. TEACH Primary is a free tool designed for classroom observations at the primary education level (grades 1 to 6). The TEACH Primary tool is used to identify the time spent on learning, and to assess the quality of teaching practices aimed at developing students' cognitive and socio-emotional skills. With the aim of implementing the TEACH Primary tool, the proMENTE social research organization held a five-day training of observers, which was realized live (3 days) and online (2 days). The aim of the training is to ensure that the observers are reliable in using the mentioned tool. Observers are employed in institutions responsible for upbringing and education. Training participants took a reliability test, and participants who passed the test were certified as Teach Primary observers. Certified observers are hired to observe classes in selected schools that belong to the area/canton they come from. In order for the results of the observations to give a reliable picture of the quality of teaching practices, a representative sample of schools in five selected cantons in FBiH was provided. Observations were carried out in 76 schools. A total of 380 lessons were observed. Observations included schools in both urban and rural areas. In each of the selected schools, a total of 5 observations of different teaching classes from the first to the sixth grade, excluding the art and religious group of subjects, were conducted, whereby at least one native language class or mathematics class was observed. Also, subjects that belong to the group of natural and social sciences as chosen by school management were observed. The data will be used to inform policy makers about professional development needs and potential future investments in education in Bosnia and Herzegovina.