A study examining the prevalence of behavioral problems in children has found a significant increase since the COVID-19 pandemic. Data from school entry assessments in the Hannover region from 2021 to 2024 were compared to data from 2010 to 2014. Medical assessments showed an increase in behavioral problems from 9.4% to 13.5%, while parental assessments rose from 7.9% to 11.2%. Despite this rise, the percentage of children receiving treatment decreased from 6.0% to 5.2%. Factors linked to positive social-emotional development include higher parental education, living with both parents, attending kindergarten for three years, low media consumption, and participation in sports. The alignment between medical and parental assessments suggests a common understanding of behavioral issues. However, the gap between the number of children identified with problems and those receiving treatment indicates a potential lack of adequate care. The study highlights the need for increased counseling and low-threshold services, particularly for vulnerable families, during school entry examinations.