The school district says the move would help save millions of dollars, but some parents say the changes could make their lives more difficult.
The district's transportation presented the idea at a meeting Tuesday. It would change school bus routes and schedules beginning in the 2012-13 school year.
Under the proposed changes, most schools would see a difference in the bell schedule of up to 10 minutes, but about 11 percent - or 18 schools - would see changes of more than 50 minutes.
District officials say the move would increase efficiency and save up to $10 million. Superintendent Tony Tata said that's a big deal, in tough economic times.
"We don't want to inconvenience parents, but we also need to save money and so we're trying to balance the two," he explained.
Starting Thursday, parents will be able to weigh in on the proposed changes in an online survey.
The board must adopt bell schedules for the 2012-2013 school year by the end of March.