Jazmin Garcia, 15, was suspended in January from Pasadena Memorial High School for being under the influence of an unidentified substance.
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However, Garcia and her family told ABC13 it wasn't drugs, but a neurological condition.
Garcia went to the doctor at the time and had a drug test. She said the results were negative.

Teen says medical condition cause for dizziness
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Her family is now calling on Pasadena ISD to change its policies.
They plan to hold a news conference this afternoon.