By Justin Udo

PHILADELPHIA (CBS) — More than 1,000 alumni gathered Sunday morning to help Roman Catholic High School in Center City celebrate its 125th anniversary.

Current and former students celebrated the school’s milestone with an Alumni Mass and Communion Breakfast.

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“I love it,” said Liam Wallis, a senior a Roman Catholic. “It’s great to talk to all the alumni. You see how excited they get when they see all their former classmates that they haven’t seen in a while. You just talk to them, pick their brain about the experience they have. You see they’re older now, but when they went to high school they were very similar to the way I am now.”

John Pensabene, who is part of the staff at Roman Catholic, says it’s an honor to work at the first diocesan high school in the nation.

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“This isn’t a job,” Pensabene said. “This is fun everyday, working with the students, working with the alum. The alums come back and they visit. They never forget their roots and it’s very gratifying to see.”

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Senator Pat Toomey gave the key note speech at the breakfast, where officials announced a massive expansion plan that’s in the works for the school.