A South Jersey girl has again been denied the use of medical marijuana in school.

Marijuana plants grow at a t medical marijuana dispensary (David McNew/Getty Images)

Administrative Law Judge John S. Kennedy ruled on Tuesday that the parents of 16-year-old Genny Barbour of Maple Shade cannot bring her cannabis oil at the Larc School in Bellmawr, to relieve the teen's epileptic seizures citing the lack of a proven medical need,  reports NJ.com. 

"There are no doctor's reports from (Genny Barbour's) treating physician that would establish that her lunchtime dose of marijuana is medically necessary," Kennedy wrote in his decision, according to NJ.com.

Kennedy previously had cited federal law that makes any possession of marijuana a crime even though state law allows medical use.

"This ruling is devastating in the sense that it is harder for Genny to get her medicine," Genny's father, Roger Barbour, reportedly said after reading the decision.

Genny currently goes home at lunch to take her dosage and winds up missing half the school day. The school has said it cannot allow medical marijuana at school as it is obligated to uphold the Drug Free School Zone Act and terms of the N.J. Compassionate Use of Medical Marijuana Act.