The phrase "additional classrooms" is correct and usable in written English.
It can be used when referring to extra or supplementary classrooms that are needed or available in a particular context, such as in a school or educational setting.
Example: "The school board has approved the construction of additional classrooms to accommodate the growing student population."
Alternatives: "extra classrooms" or "supplementary classrooms".
The exposed, unfinished sections of the project -- including a three-story addition, new cafeteria, science laboratories, additional classrooms, art rooms and equipment for the elementary school playground -- developed mold because of the damp weather.
The public school system serves 3,000 autistic students, adding additional classrooms as the need arises.
While work on the master plan is still in the preliminary stage, he said, the campus will get a student center and additional classrooms.
But new schools and additional classrooms have not kept pace with skyrocketing caseloads and growing sophistication among parents about what sort of educational techniques work.
Four years ago district voters approved a $20 million bond for a recently constructed high school wing, additional classrooms and computers.
Additional classrooms were furnished in preparation for the temporary students from P.S. 89, and filled with books, train sets, puzzles and other gifts sent by concerned companies, schools and other donors from around the country.
The county has taken additional classroom space in firehouses in Katonah and Mamaroneck.
I'm going out to help refurbish a school and build an additional classroom for kids that have it tough.
And as a short-term solution, the city had named 26 Broadway as an option for additional classroom space.
Kwa Njenga Primary School, North Berwick, East Lothian: support an associated school in Kenya with funds toward an additional classroom.
"That means school districts must provide additional classroom space, hire additional staff and provide services for many incoming students who have limited English proficiency".
