Last year, the state Department of Education voted to allow the school to accept increase its enrollment to 800 students. But that's in violation to the city's ordinance that the school can only have 600 students.
The Planning Commission sided with nearby office employees, who say the influx makes it difficult for them to get back and forth to their offices.
The school said it staggered the arrival and dismissal times for middle and high school students to alleviate traffic.
"We have had a lot of students on waiting lists and we want to make the education that's offiered here available to those students," Luanne Baroni, the middle school principal, said.
The school will go before city Board of Directors in two weeks, hoping they will override the planning commission's decision.