Starting Tuesday, students in the Los Angeles Unified School District will be banned from using cell phones on campus. The ban is aimed at improving the educational environment by limiting the use of cell phones and social media during school hours.

A district-wide cell phone ban takes effect on Tuesday. It was approved by LAUSD’s board last June in an effort to improve student engagement, reduce bullying and improve mental health.

The district’s board passed a resolution in June in a 5-2 vote calling for a prohibition on students’ use of cell phones and social media through the entire school day.