ST. CLOUD -- Bishop Donald Kettler spent his birthday at Cathedral High School this morning (Tuesday) for their fifth annual Grandparents Day celebration.

More than 450 grandparents attended the kick off breakfast which was followed by campus tours from their grandchildren.

Brigid Brew is a Cathedral senior. She says this was the first time a Bishop has attended the celebration.

Grandparents were invited to stay for an all school mass following the breakfast. It was Bishop Kettler's first celebrant mass at Cathedral High School.

He was formally installed about three weeks ago.

See a video of the Grandparents Day celebration below.