A systemic literature review was undertaken to better understand the factors that impede broad implementation of school-based mental health screenings, a proven intervention. The literature review identified thirteen articles about barriers to school-based mental health screenings published in peer-reviewed journals in the last 10 years. Issues related to diversity, including distinctive knowledge bases and cultures (regarding education and mental health), and the academic demands make up the main barriers to implementing school-based mental health screenings. Findings have the potential to inform social work practice, especially in schools, by providing a comprehensive analysis of knowledge on the subject of that can inform efforts to implement this type of service in late elementary school settings in order to improve the mental health outcomes, including suicidal ideation, of this population.