Why we’re built this way

Research reviews consistently connect school-based physical activity with attention, concentration, memory, on-task behavior, and other conditions that support learning. The evidence is positive overall, although results vary by the type, timing, frequency, and intensity of activity.

The conceptual-understanding portion of this statement draws on movement-integrated and physical-literacy research. That work suggests movement can deepen understanding when teachers connect physical activity to the concepts students are learning. It should not be read as a claim that exercise alone improves every academic outcome.

A randomized study of Houston’s Arts Access Initiative included 42 elementary and middle schools and more than 10,000 students. Schools selected through the lottery received a substantial increase in arts experiences across visual arts, music, theater, and dance.

Compared with the control group, students in participating schools had a 3.6 percentage point reduction in disciplinary infractions and a writing-score improvement equal to 13 percent of a standard deviation. In the elementary-school portion of the study, students also reported stronger school engagement. The study did not find significant gains in every tested subject or outcome.

A systematic review of rigorous causal research found that adding instructional days or lengthening the school day can improve academic achievement. The benefits vary by student group, subject, and the way added time is structured.

More time is not enough on its own. Research also documents programs that produced no significant achievement gains. Effective extended time must protect against fatigue and pair the added hours with focused instruction, meaningful enrichment, and clear learning goals. That distinction is central to City River’s 8-to-5 model.

The CDC defines school connectedness as students believing that adults and peers at school care about them as individuals and about their learning. That definition supports City River’s emphasis on a trusted adult and regular, proactive conversations.

The evidence supports connectedness as a protective school condition. It does not show that one coaching model will produce the same outcomes, and City River has not yet evaluated its planned Heart and Mind Program.

Restorative practices are a way of building a school community where people talk openly, take responsibility, and repair relationships when harm occurs. Regular conversations and shared routines help students listen, understand how their actions affect others, and work through problems together.

City River will use these practices to build trust and belonging before something goes wrong, not only to respond afterward. When conflict does happen, students are guided to name what happened, who was affected, what responsibility they hold, and what would help move the relationship forward. Research suggests this approach can support stronger relationships, school climate, and conflict management, although results depend on consistent implementation.

A 2022 systematic review evaluated 77 studies involving 12,358 students across five continents. Its highest-quality evidence found gains in attention, executive function, resilience, and mindfulness, while findings for broader well-being were mixed and depression symptoms did not improve.

The authors describe the field as promising but still maturing, with many studies using less rigorous designs. City River’s planned practices should be understood as skill-building, not therapy or a guarantee of mental health outcomes.

A CDC systematic review examined U.S. K–12 research published from 2010 through 2021. It found that approaches such as improving meal palatability, increasing access, and creating a supportive nutrition environment can increase students’ selection and consumption of healthier foods.

This evidence supports access and program design. It does not establish that City River’s planned menu will produce a specific academic or health outcome, and the school has not begun meal service.

The U.S. Surgeon General’s 2023 advisory says social media can offer benefits as well as risks, and that current evidence is not sufficient to conclude it is safe for children and adolescents. The advisory reports associations between heavy or problematic use and depression and anxiety symptoms, sleep problems, attention problems, and fewer opportunities to practice in-person interaction. Effects vary by student, content, and pattern of use.

The advisory recommends creating tech-free zones and encouraging in-person friendships. That guidance supports City River’s decision to protect the school day from phone and social-media interruptions. It does not prove that a phone-free policy will produce a specific academic or mental health outcome for every student.