PITTSBURGH -- Police call this time of year the "underage drinking season."

After-prom parties and graduations mean more and more underage kids are getting ahold of booze.

You have to be 21 to buy alcohol in Pennsylvania, so where are they getting it?

Target 11's Karen Welles went bar-hopping undercover with Pennsylvania State Police Liquor Control Enforcement (LEC).

College students who usually want careers in criminal justice volunteer to go undercover with police into bars and beer distributors and try to buy booze.

Target 11 went along on a number of compliance checks to see how many times the volunteers got served.

At a bar in Jeannette the bartender gave a 19-year-old undercover agent a beer even after he saw her identification.

When LEC agents come in, the bartender claimed he couldn't see the age on her driver's license.

But in Pennsylvania if you're over 21, your driver's license is horizontal, under 21 and it's vertical.

There is also a red line on the license that notes when the license holder turns 21.

Still in the Pittsburgh area this year alone more than half the kids under 21 who presented driver's licenses got served anyway.

The underage volunteer on the raid said, "Last time I got all five places, out of five bars that we went to, they all served me. A couple even carded me and still served me."

The volunteer got served at a bar in Lawrenceville on the night Target 11 was with her.

She said, "I walked into the bar and I sat down just like a normal customer. He didn't even card me or anything and just served me a beer."

At a beer distributor in Glenshaw, the same under-21 volunteer was served more than just one beer. She got a whole case and an employee even carried it out to her car for her.

Owners, who are cited, as well as their employees, must go through special training.

Sgt. John Kean from Liquor Control Enforcement said, "It's a program so their owners and bartenders become aware of what to look for when youthful looking patrons come into their establishments."

Along with the special training required for owners who are cited and their employees, the fine for a first offense is $1,250.

If they get cited again and again, they could lose their licenses.