In survey, principals say more time is spent addressing problems associated with the threat of gun violence than any other challenge.
Thousands of students across the state Friday participated in the third national walkout since the February school massacre in Parkland, Fla. The event also recognized the 19th anniversary of the mass shooting at Columbine High in Colorado.
On National Day of Action Against Gun Violence in Schools, city violence also weighs heavily on Bay Area educators and community.
