Two charter bus drivers were arrested and charged with furnishing alcohol to minors.
Kemah police said the buses brought high school students from Orange and Lake Jackson, Texas, to Kemah last weekend.
Police say they first got a call about the bus from Orange when a high school student on board needed medical attention for his diabetes. He was rushed to the hospital in critical condition. Police say the medical situation was not related to any alcohol use.
In the second case, security at the Kemah Boardwalk called police because the officer suspected alcohol use on board the bus.
"It's very unusual. We have a lot of people that come to our town. But we normally don't have these types of issues," Kemah Police Chief Greg Rikard said.
Police said they found alcohol on board both buses and took a total of about 50 students to the Kemah Fire Station and called parents. Police arrested the two bus drivers.
Jacob Shears and Rachad Tabakh were charged with furnishing alcohol to minors.
A student was also arrested and charged with a minor in possession of alcoholic beverage.
"My understanding, she became belligerent and was combative and argumentative and was cursing and she had a bottle of booze in her purse and she went to jail for that," said Rikard.