Tests showed Montgomery "Monte" Wood, 16, had alcohol in his system when he crashed a Mitsubishi Lancer Evolution after Copeland supplied him and three friends with liquor, police said.
Wood and his front-seat passenger, Britany Leger, 15, were killed. Two other 15-year-olds in the car, Damien Paterno and Cameron Merlino, were injured.
Police said that Copeland, described as a friend of Leger's, took Wood and Leger to a beer distributor, where Copeland used their money to buy malt beverages, then to a State Store to buy the whiskey.
Copeland drove the pair to her residence, where Paterno and Merlino had been waiting, police said. The teenagers left with the alcohol and drank some of it at a nearby creek, then walked less than a mile through a wooded area to Wood's home, where they drank more, police said.
Corrupting minors is punishable by up to five years in prison, said Patrick Carmody, first assistant Chester County district attorney. He said furnishing alcohol to minors, which carries a maximum penalty of a year in prison, is a common offense.
"People give alcohol to kids not thinking about the consequences of their actions; a tragedy like this calls attention to the danger of doing that," Carmody said.
He said that the investigation was not over and that more charges could follow. Prosecutors could add felony charges to the misdemeanors.
Police said the four teens were camping out at Wood's house when they decided to take the car out for a middle-of-the-night spin. None of the teens was a licensed driver.
At 3:10 a.m., the speeding car crossed the eastbound lane of Beaver Dam Road and hit a tree, then spun into a utility pole, police said.
The deaths stunned a rural school district, said Twin Valley Superintendent Robert Pleis, who has worked in the district in various roles for 16 years.
