She was the assistant principal when the 6-year-old student shot his first grade teacher.
A 15-year-old girl has been arrested in connection with alleged threats of violence made toward Troy High School in Fullerton, police said.
Two Corona High School students were arrested for separate threats of violence made toward the school, police said.
More than a dozen elementary school students in Northern California had to be tested for HIV and hepatitis after being poked with a needle that a fellow student brought onto campus.
An 11-year-old boy was charged with attempted murder Friday after allegedly stabbing a fellow classmate at Bridge Street Elementary School in Boyle Heights with a pocket knife, officials said.
A 5th grade student was stabbed at a Boyle Heights elementary school on Thursday, according to officials.