These superintendents faced the same pushback and perceived obstacles that every district cites—transportation, athletics, staffing, and myriad otherr community concerns—and still found solutions that worked.

Their message is unmistakable: later start times aren’t aspirational. They’re achievable, sustainable, and transformative when leaders choose to lead.

To read more about what these superintendents shared and why their stories matter for communities everywhere check out the Full Substack article!

For years, communities have relied on a strong and consistent body of research showing that later school start times support adolescent health, safety, and learning. Yet because this issue is such a controversial policy issue, it is tempting for people to seize on, spin, or oversimplify studies in ways that muddy the waters and confuse the public. And the impact isn't just theoretical. It has serious implications for children's health and well-being.
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A recent example that supplies nuance to the benefits of starting later, but has been, instead, spun as a way to question the benefits altogether, shows how easily research in this area can be misread and misused. Instead of clarifying what we know about teen sleep and school schedules, it provides ready fodder for a public conversation using claims the study didn’t actually support. That kind of distortion risks undermining years of progress toward healthier, more equitable school hours.

Science should inform policy, of course, and new research should be considered even if it casts doubt on reigning beliefs. However, science-informed policy starts with a full and thorough understanding of what a given study does and does not say. It also includes avoiding the temptation to seize on a headline and applying it to some preconceived contrarian notion rather than understanding how a single study fits into a much larger body of literature. It also involves considering the impact of a self-serving article or quip on decisions being made to protect student well‑being.

To see a deeper dive into how this happens—and why it matters—you can read my full Substack post here: https://terraziporyn.substack.com/p/when-science-meets-spin

​Terra Ziporyn is Start School Later's Executive Director and Co-Founder

Anyone who has spent years pushing for healthier school start times knows how immovable a district can seem—right up until the moment it isn’t. Clark County, Nevada, long one of the most resistant districts in the nation, is now offering a master class in how quickly the “impossible” can become inevitable.

Not long ago, Clark County was fighting tooth and nail against later high school start times. Leaders dismissed the science, warned of catastrophic costs, and framed any shift as a logistical nightmare. They even pushed back against a statewide proposal to require high schools to start no earlier than 8:00 a.m. Then, almost overnight, the tone changed. With new leadership and a community‑driven review process, the district began acknowledging the benefits of later start times and speaking publicly about student well‑being in ways that would have been unthinkable just a year earlier.

This kind of reversal isn’t unique. I’ve seen it in Columbia, Missouri, where a misguided proposal to start high school earlier ended up catalyzing a move to 9:00 a.m.—thanks in part to a well‑informed 15‑year‑old who refused to accept “impossible” as an answer. And I’ve lived it in Anne Arundel County, Maryland, where decades of stalemate gave way to an 8:30 a.m. high school start time after years of insisting even a 13‑minute shift was unworkable.

Clark County’s new plan isn’t perfect—middle schoolers are still being left behind—but the mindset shift is a big deal. In fact, it’s the foundation every long‑term change is built on. It's also real inspiration for anyone still out there in the trenches.
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I explore the full story, and what it means for advocates everywhere, in my latest Substack post.

​Terra Ziporyn is Start School Later's Executive Director and Co-Founder

Sleep: The Foundation of Elite Performance
Professional athletes have long recognized that sleep is a non-negotiable component of their success. LeBron James, widely considered one of the greatest basketball players of all time, famously prioritizes 10 to 12 hours of sleep a day to maintain his high level of play. James has noted that sleep is the best way for his body and mind to recuperate:

"Sleep is the best recovery that you can have. It’s basically equivalent to you putting your phone in a charger when you go to bed... if you try to get the most sleep that you can get, that is the only way you’re gonna get back to 100 percent."

He isn't alone. NBA star Andre Iguodala saw his performance skyrocket after overhauling his sleep habits with the help of physician-scientist Cheri Mah. By increasing his sleep duration and improving his routine, Iguodala’s three-point performance more than doubled, and his points per minute increased by 29 percent.

The science bears this out across all levels of play. A landmark study of Stanford basketball players showed that when athletes aimed for at least ten hours of sleep a night, they saw a 9 percent increase in successful free throws and three-pointers, alongside significantly faster sprint times. Conversely, sleep deprivation acts as a drag on performance. Research tracking NBA players’ late-night social media use found that players who were up late tweeting performed significantly worse the next day, including making fewer shots.

A Shield Against Injury
For a student-athlete, an injury is more than just a physical setback; it’s a loss of identity, playing time, and often academic focus. Sleep is perhaps the most effective tool we have for injury prevention.

When teens are sleep-deprived, their coordination, response time, and cognitive processing are impaired. A study of secondary school athletes found 65 percent of those who slept fewer than eight hours sustained injuries, compared to just 31 percent of those who slept more.

Sleep is also the primary avenue for physical repair. It is during deep sleep that the body secretes growth hormones essential for muscle recovery and cell regeneration. Without enough sleep, the "micro-tears" created during intense workouts remain torn, increasing the risk of more severe muscle damage. 
Furthermore, sleep plays a bidirectional role with concussions: poor sleep increases the risk of sustaining a concussion, and a concussion can, in turn, trigger chronic sleep problems.
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Mental Health and the Rested Athlete
Beyond the physical gains, sleep is the bedrock of mental health. Student-athletes face immense pressure to perform both on the field and in the classroom. Lack of sleep exacerbates anxiety, depression, and irritability.
Neurologist Chris Winter notes that athletes who make sleep a priority "just enjoy longer and more sustainable success" and are less likely to burn out. Sleep helps athletes maintain the focus and emotional resilience needed to handle the "strain on anxiety levels" that comes with competitive sports and the recovery from inevitable setbacks.

Does Starting School Later Actually Help?
The evidence is clear: sleep improves performance and prevents injury. But can changing school start times actually deliver these benefits?

The answer from athletic directors and researchers we’ve worked with is a resounding yes. Because of a biological shift in circadian rhythms during puberty, most teenagers cannot naturally fall asleep before 11:00 p.m. When school starts early, they are forced to cut their sleep short during the most critical hours for cognitive and physical recovery.

By shifting start times later, schools allow students to get sleep that is synchronized with their biology. This isn't just theory—athletic directors who have made the switch report that their athletes are more alert, have more energy for afternoon practices, and show improved academic eligibility needed to play sports. Later start times also mean that student-athletes are less likely to rely on caffeine or "energy drinks" to get through the day, which can further disrupt natural sleep cycles.

Addressing the Coaches' Concerns
Common myths often suggest that later start times will ruin athletic programs by pushing practices too late. However, coaches who support later starts argue the opposite. They consider:

• Quality Over Quantity: A rested athlete has a more productive 90-minute practice than a sleep-deprived athlete has in three hours.
• Reduced Absenteeism: Rested athletes miss fewer practices due to illness and injury
• Academic Eligibility: Later starts can improve GPAs and reduce failure rates, keeping more players eligible to play.

For years, many of us assumed that if we simply presented the science on adolescent sleep, school leaders would naturally shift to healthier start times. After all, the evidence is overwhelming: later start times improve sleep health, mental health and emotional well-being, safety, and school performance. But evidence alone has never been enough—and that’s the part we too often missed.

School schedules aren’t set by people who wake up thinking about circadian rhythms. They’re set by people juggling budgets, transportation contracts, staffing, sports, community politics, and the fear—often justified—of public backlash. Their resistance isn’t about not understanding the science. It’s about competing priorities, risk, and self‑interest.

The turning point comes when we stop trying to change those interests and instead learn to align with them. When later start times become a solution to the problems decisionmakers already care about—attendance, graduation rates, equity, safety, even economic outcomes—doors open. And when communities understand what’s at stake for their own kids, political will follows.

Healthy school hours aren’t just a sleep issue. They’re a systems issue involving a multitude of stakeholders with differing priorities. And when we frame them that way, without losing slight of the science, we create the conditions for real, lasting change.

Read the full article here:
👉 A Matter of Interest
https://terraziporyn.substack.com/p/a-matter-of-interest