Why So Early? School Start Times and Suburban Sprawl

The advent of sprawl coincided with a move toward earlier school start times, prompted by a need to coordinate complicated bussing. If students could walk to school, the problem might disappear.

1 minute read

April 6, 2017, 5:00 AM PDT

By Philip Rojc @PhilipRojc


It's hard to believe as a younger person, but before mass suburbanization school used to start at 9 a.m. or later. That isn't the case today. Mimi Kirk writes, "according to the Centers for Disease Control and Prevention, at least 75 percent of schools surveyed in more than 40 states for a 2015 report started before 8:30 a.m., with a significant number starting in the 7 a.m. hour."

Why the change? Kirk traces it to the 1960s and 1970s, when sprawl began to make walking to school difficult. Cultural changes around childrearing also discouraged walking. The result, a tiered bus schedule, imposed early start times for high schoolers. As driving became the norm, so did an early start.

Kirk discusses how the 7:30 a.m. start may cut into young people's sleep needs. "That research, which recently led both the CDC and the American Academy of Pediatrics to urge later start times at American schools, shows that teenagers need at least nine hours of sleep a night."

A movement to push back school start times is picking up speed, but faces its share of debate. Long-term, a common sense solution to the problem would be to re-enable walks to school. But that would require walkable communities, and encouraging those can be an uphill climb both ways. 

Thursday, March 23, 2017 in CityLab

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Wastewater pouring out from a pipe.

Alabama: Trump Terminates Settlements for Black Communities Harmed By Raw Sewage

Trump deemed the landmark civil rights agreement “illegal DEI and environmental justice policy.”

April 13, 2025 - Inside Climate News

High-rise apartment buildings in Waikiki, Hawaii with steep green mountains in background.

Study: Maui’s Plan to Convert Vacation Rentals to Long-Term Housing Could Cause Nearly $1 Billion Economic Loss

The plan would reduce visitor accommodation by 25% resulting in 1,900 jobs lost.

April 6, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

April 10, 2025 - Diana Ionescu

Streetcar and bus stopped at station on Market Street in San Francisco with Ferry Building visible in background.

Waymo Gets Permission to Map SF’s Market Street

If allowed to operate on the traffic-restricted street, Waymo’s autonomous taxis would have a leg up over ride-hailing competitors — and counter the city’s efforts to grow bike and pedestrian on the thoroughfare.

1 hour ago - San Francisco Examiner

Parklet with wooden benches and flower boxes on street in Ireland.

Parklet Symposium Highlights the Success of Shared Spaces

Parklets got a boost during the Covid-19 pandemic, when the concept was translated to outdoor dining programs that offered restaurants a lifeline during the shutdown.

2 hours ago - Streetsblog San Francisco

Bronze statue of homeless man (Jesus) with head down and arm outstretched in front of St. Matthew Cathedral in Washington D.C.

Federal Homelessness Agency Places Entire Staff on Leave

The U.S. Interagency Council on Homelessness is the only federal agency dedicated to preventing and ending homelessness.

3 hours ago - The New York Times