The school's P&C reported dozens of near misses in the past four weeks.

The issue came to a head when the school's Bell Street entrance was closed indefinitely after last month's superstorm, during which a tree collapsed on the administration building.

Now, 120 students - plus teachers, staff and parents - must use one entrance.

P&C vice-president Sharon Clifford, whose daughter Rebecca is in year 6, said the Main Road crossing had become more dangerous with a higher volume of pedestrians.

She said cars were not slowing down despite the presence of school crossing supervisors.

"There's going to be a really bad accident; someone is going to get hurt out there if they don't slow down," she said.

"I don't want my child to be hit. I don't want somebody on that crossing to be injured before someone in Speers Point says 'hang on a minute, we should slow down'."

Main Road is an arterial road that feeds cars from Boolaroo to The Esplanade, Speers Point.

Mrs Clifford estimated some cars flew past the school at speeds of up to 80km/h, no matter the time of day.

She said that the P&C had noticed a slight decrease in speeding since Roads and Maritime Services erected flashing school zone signs about two years ago but that more needed to be done.

Mrs Clifford said the P&C wanted mid-block traffic signals or a pelican crossing.

An RMS spokesperson said the authority reviewed signage and line markings earlier this month with Lake Macquarie City Council and found they met current safety standards.

"Roads and Maritime will work with NSW Police and the Centre for Road Safety on speed limit enforcement to ensure pedestrian safety."