It's a school celebration years in the making.
Parents, students and educators officially opened P.S. 51 on the West Side on Wednesday, though students have been attending classes there since last week.
The original P.S. 51 building had been in a state of disrepair since the '70s, and its student population outgrew the space.
For the past two years, during construction of the new building, students bused across town to the Upper East Side.
Students said they're happy to finally have a place to call home.
"When I was in pre-K, we were in that building over there, the old building and then, when I went to third grade, we went to the Upper East Side. And now, I'm in fifth grade and we're here," said student Samantha Alexander, who, when asked how they compare, said, "This school is definitely the best one."
"It's been very arduous," said Nancy Singh-Boch, the school's principal. "I think I can honestly say that no school has really gone through something that we have been through."
The new school features a 16,000-book library, a rooftop playground and two gymnasiums.