BOISE β€” Timberline High School is celebrating a brand new expansion at the school in southeast Boise, one of the fastest-growing areas in the state.

The new wing, appropriately nicknamed "The Den" for the school's mascot, the Wolves, adds an additional 33,000 square feet of space and features 13 new classrooms.

Principal Ted Hettinga says each classroom is already full!

The expansion is thanks in part to the $172.5 million bond overwhelmingly passed by voters back in March of 2017.

"We were hearing from our students and our parents and our staff that this was a need,” said Board of Trustees President Nancy Gregory. β€œAnd we knew it was coming, so we've been planning for this day, but what a wonderful day it is to stand here and see it come to fruition.”

Timberline is home to nearly 1,400 students this fall -- up 110 students from last year.

Superintendent Dr. Don Coberly says he expects Timberline to become the largest high school in the district.