Olayinka Alege and J. Howard Johnston present a policy brief on zero-tolerance policies in US schools. They discuss how recent studies show that Hispanic and dark-skinned students are more likely to receive out-of-school suspensions for the same misconduct as white classmates, indicating racism. School administrators' and teachers' mindsets, as well as student diversity and gender, influence these discriminatory disciplinary practices. The authors argue schools should ensure equality and avoid discrimination based on gender, race or creed to improve student achievement and performance.