San Ramon school and police officials are investigating after racially charged graffiti was reported at California High School twice during the past week.
Both incidents involved slurs targeting African-Americans written in marker on bathroom wall tiles, one occurring last week and the other on Monday, according to district spokeswoman Elizabeth Graswich.
A Cal High student Tuesday afternoon admitted to being responsible for the first incident, Graswich said, adding that "appropriate school disciplinary action will be taken" and the police investigation is ongoing.
Police and school administrators also continue their investigation into Monday's graffiti incident, according to Graswich.
The vandalism prompted principal Sarah Cranford to send a message to Cal High parents and coordinate classroom visits for herself and school administrators to discuss the situations with students Tuesday, according to Graswich.
"Please know that we take all such reports very seriously and investigate them thoroughly," Cranford wrote in her email to parents Tuesday. "We will not tolerate harassment of any kind on our campus."
San Ramon police's school resource officers and investigations division are aware of the graffiti case and are working to gather information, according to Officer Becky Chestnut.
The initial incident was reported to school officials last Wednesday, after a student told a teacher about a social media post that showed racist graffiti in a male restroom purported to be at Cal High, according to Graswich.
School officials searched all bathrooms but the graffiti wasn't found, Graswich said. They subsequently confirmed the graffiti did actually occur at the campus, she added.
The second graffiti was reported Monday, and the message was found in a female restroom, documented and removed, according to Graswich.
The graffiti incidents are "incredibly disappointing" because the Cal High community strives to promote inclusion and cultural understanding, including hosting a "Breaking Down the Walls" program less than a month ago to signify unity and engage students in creating a positive school climate, Graswich said.
Cal High officials are also talking with student groups about the incidents, and they hope to continue the conversations about showing unity and promoting cultural understanding on campus now and going forward, Graswich added.
"It's very important for the district that our students and staff feel safe in our schools," she said.