Castro Valley Unified School District

In response to growing concerns about the impact of mobile phone use on student mental health, academic engagement, and campus culture, California lawmakers passed the Phone-Free Schools Act (AB 3216) in 2024. Signed by Governor Gavin Newsom, the legislation strengthens existing education code by requiring public schools to implement comprehensive policies limiting or prohibiting student use of mobile phones during the school day.

The law is grounded in data and research linking increased screen time to rising rates of anxiety, depression, and classroom distraction. It reflects a statewide commitment to prioritizing student well-being and creating learning environments that foster focus, connection, and inclusion.

CVUSD is committed to creating a policy with our families, students, and staff—together we’ll support learning, well-being, and communication.

About the Law

• Passed in 2024, the Phone-Free Schools Act requires all California schools to adopt policies limiting or prohibiting student smartphone and smartwatch use during the school day. 
• CVUSD must implement this policy by July 1, 2026.
• U.S. Surgeon General's Warning on Social Media and Youth Mental Health
• California Governor Signs Legislation (Phone and Device-Free Schools Act) to Limit Phones During School Hours

Professional Organization Websites and Studies

• Away for the Day (family-focused)
• American Academy of Pediatrics Center of Excellence on Social Media and Youth Mental Health
• American Psychological Association Health Advisory on Social Media Use in Adolescence
• Protect Young Eyes (family-focused)
• TEDTalks: The Anxious Generation (family-focused)
• Wait Until 8th (family-focused)
• Youth Engaged For Change Tip Sheet on Social Media