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The girl's father called 10News on his way to the emergency room at UC San Diego Medical Center where she was taken Tuesday afternoon. He said he was extremely angry and upset that this could happen.

10News is protecting her identity because of her age.

At the hospital, the girl's mother told 10News that her daughter had a blood alcohol level of .127, which is twice the legal limit.

"Just that they found her unconscious, she was throwing up," said the teenager's mother, Norma. "Lifeguards found her like that."

Though her illegal actions were her own, the girl's parents want to know where the teacher supervision was.

"They found among the friends Jack Daniels and Coronas," said Norma. "Teachers [were] nowhere to be found."

San Diego lifeguards say beachgoers alerted them to several teens drinking on the beach near Tower 15 at about noon Tuesday.

When lifeguards arrived, they found a bottle of alcohol hidden in the sand. They also found the teenage girl extremely intoxicated. They called for assistance from paramedics and San Diego police.

"What if she would have drowned?" asked her mother.

The girl's boyfriend arrived at the beach in his own car about an hour after she arrived by school bus. He said by the time he arrived, she was already drunk.

"I got there and [it was] pure kids hanging out," he said.

He said he did not see any teachers.

10News tried to speak with the principal of the Leads School at San Diego High School in downtown San Diego, but the front office was locked. 10News also contacted the San Diego Unified School District and was told by district spokesman Jack Brandais, "I cannot comment on discipline issues… I don't have time to deal with this right now as I have a district board meeting to get ready for."

Those were not the answers the girl's mother wanted to hear.

"I don't know how far the teachers were from these kids," said Norma. "I mean, if they can't handle this many kids, don't take them on a field trip."

The girl was released from the hospital on Tuesday evening.