The phrase "a classroom of first" is not correct and lacks clarity in written English.
It seems to be an incomplete thought and does not convey a clear meaning without additional context.
Example: "In a classroom of first graders, the teacher introduced a new reading program."
Alternatives: "a classroom of first graders" or "a first-grade classroom".
"What would you like to see different?" she asked again and again on Friday, in a classroom of second graders at the school she attended as a child.
Suppose that Mrs. Brown and Mr. Smith both teach a classroom of third graders who score at the fiftieth percentile on math and reading tests on the first day of school, in September.
In the process, she learned life lessons including how to admit you don't know the answer and how to manage the toughest meeting of all: a classroom of eighth graders.
GRANVILLE, Ohio — Speaking to a classroom of seventh and eighth graders at the middle school here, Lisa Magnuson shared a popular dictum from the power industry: if Alexander Graham Bell, the inventor of the telephone, could see how his technology had evolved over the last century, how would he react?
In the drills, when the supervisor wants to address the whole group, he raises his right hand and says, "Brief!" All turn to face him and raise their hands, until they look like a classroom of third graders, eager to be called on.
Not too long ago, I really was blind enough to think that a teacher's son walking into a classroom of first-graders and opening fire was as bad as the news could possibly get.
Dutch art director and curator Erik Kessels told a classroom of second-year photography students from Écal to embarrass themselves as creative practice.
Jameis Winston, quarterback of the Tampa Bay Buccaneers, recently stopped by a St . Petersburg FL elementary school to give a speech to a classroom of third, fourth and fifth graders.
Robynn Leidig on Wednesday stood in front of a classroom of seventh-graders at Toll Middle School as their raised hands began to paint an all too common picture of verbal, cyber, emotional and sexual bullying.
In the past two decades, it has also gained notoriety as the place where Pee-wee Herman jerked off in a porno theater and where, on 9/11, George W. Bush was informed that a second plane had crashed into the World Trade Center as he stared blankly at a classroom of second graders reciting spelling exercises.
