DENVER
05/28/2014 12:01 pm ET Updated May 28, 2014

Columbine Principal Frank DeAngelis Retires

RJ Sangosti via Getty Images

JEFFERSON COUNTY, Colo. - "It's bittersweet."

That's how Columbine principal Frank DeAngelis describes today.

It's the last day of the school year at Columbine High School.

DeAngelis has been through this 34 times at Columbine. However, this is his last, last day of school. He's retiring next month.

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