In the Republic of Croatia, student achievement is monitored and assessed during classes in each subject and in behavior. Grades for subjects are determined numerically, and grades for behavior are descriptive, and at the end of the school year, the general success of students is determined. In September 2020, a survey was conducted to determine students' attitudes about school assessment in relation to: prescribed methods, procedures and elements of evaluating student achievement, emotional and social aspects of student development and subjective mistakes of teachers in assessment. The research showed that school assessment, from the perspective of students, is related to their emotional and social development and is also related to the subjective mistakes of teachers, but the teacher's application of assessment regulations is not disputed. School assessment is an indispensable component in the evaluation of students' abilities, with which students themselves agree and they are aware of the importance that assessment has on their further development and academic progress. Given the inseparability of assessment and the emotional and social development of students, teachers are required to monitor the work and progress of students in its overall development. This is achieved by taking measures to create the most favorable conditions and helping each student to achieve the best results and giving frequent feedback to students and the active involvement of students in educational work.This research can serve as an idea for further research on school assessment and as feedback to professional associates and teachers from schools in which it was conducted in order to improve the educational process or deepen certain components of the research.