Parking enforcement officers have been called in to restore order at Talbot Trail Public School in South Windsor.
The school's principal describes the combination of parking, pickups and drop-offs as "Armageddon."
'The congestion is bad. It's dangerous.' - Millie Hayward, parent
Parents are arriving as much as 30 minutes earlier than school lets out.
For the first time this school year parking enforcement arrived before most parents Tuesday.
They were there Monday, too, handing out $30 tickets for illegally parked vehicles.
School board staff wear reflective orange vest to help facilitate safe crossings and entry to the school.
"I get a spot where I can watch my son cross the street and make sure he's safe," parent Isabelle Graham said.
Safety is the core issue among parents and staff. There are too many cars and buses are boxed in.
Greater Essex District School Board spokesperson Scott Scantlebury said the board's transportation consortium requested parking enforcement because buses were being delayed coming and going to and from the school.
"The congestion is bad. It's dangerous. There's people parking on both sides of the road," parent Millie Hayward said.
Scantlebury said the situation is creating "extreme anxiety" for all involved.
He said one staff member has been injured by a moving vehicle and that kids have had "some close calls."
"Thankfully, we haven't had any serious incidents with students," Scantlebury said.
Walking pitched as solution
The school board is asking parents to let their kids walk to school.
"When they're driving to school they don't see their surroundings, they don't know what's going on in their communities and neighbourhoods," Scantlebury said. "It allows them to connect a little better to their neighbourhoods and communities when they walk to school ."
Scantlebury called the problem "pervasive" across the school board.
"It was previously limited to a small number of schools," Scantlebury said. "More walkers are being driving to school and picked up."
Parents who spoke to CBC News on Tuesday said they are usually in too much of a hurry to allow their kids to walk to school. Some said safety is also a concern when their children cross the streets.