Walk into almost any school, and someone will hand you a spreadsheet. Test scores, attendance rates, college acceptance numbers—the visible markers we use to sort “good” schools from “bad.” But if you sit quietly in the back of a classroom, linger in the hallways between periods, or eat lunch at a table nobody else wants, you start to notice something deeper. You hear the way adults talk to kids when no one is watching. You see which students’ work gets displayed and which gets tucked into a drawer. You feel, in the air, whether this is a place where people trust each other or a place where they just survive the day.
Dr. Wallace Chu has spent three decades studying that invisible layer of school life. He’s been a teacher, a principal, and a researcher, and he’s walked through hundreds of buildings across the country. His conclusion is straightforward: you cannot grasp what a school really is until you understand its culture. The numbers tell you outcomes. The culture tells you how those outcomes came to be—and whether they’re built on something that can last.
The Iceberg Model of School Life
Think of a school as an iceberg. Above the waterline, you have the obvious stuff: graduation rates, trophy cases, honor roll lists. These are the things school boards and real estate agents love to talk about. But beneath the surface sits a vast, dense mass of beliefs, habits, and unspoken rules that actually steer the ship. This is the culture—the shared understanding of “how we do things here.” It’s what makes a teacher stay late to help a struggling student without being asked. It’s also what makes a talented young educator leave after two years, exhausted by a faculty lounge full of complaints.
Dr. Chu often asks new teachers to play anthropologist for a day. Walk the building and collect artifacts, he tells them. What’s on the walls? Are there signs that celebrate student thinking in progress, or only finished, flawless products? How does the front office staff greet a parent who arrives upset? These tiny interactions are the rituals of the school, and they reveal more than any mission statement ever could. A school can have a beautiful motto carved in stone above the entrance, but if the adults inside treat late students with contempt rather than curiosity, the real message is clear: compliance matters more than understanding.
Three Pillars That Hold Up a Healthy Culture
Over the years, Dr. Chu has identified three qualities that appear again and again in schools where both students and staff thrive. These aren’t programs you can buy off a shelf or mandates you can roll out in a faculty meeting. They’re organic, slow-growing, and need constant tending.
1. Psychological Safety for the Adults
We talk endlessly about making classrooms safe for students, but a school’s culture is shaped first by how the adults feel. In a psychologically safe school, a teacher can walk into a colleague’s room and say, “That lesson bombed. Help me figure out why,” without worrying about gossip or a negative evaluation. A custodian can suggest a better way to schedule room cleanings and be taken seriously. When adults feel safe enough to be imperfect, they model intellectual courage for students. Dr. Chu has found that the strongest predictor of a collaborative student environment is whether teachers regularly visit each other’s classrooms—not to judge, but to learn. In a fearful adult culture, doors stay closed, struggles stay hidden, and that tension eventually seeps into every corner of the building.
2. Rituals That Bind the Community
Culture doesn’t live in mission statements. It lives in the things we do together, over and over. The most cohesive schools have rituals that pull everyone in—not just students, but staff, families, even the bus drivers. It might be a weekly all-school gathering where a different class shares what they’ve been learning. It might be a monthly meal where teachers sit with students instead of retreating to the faculty lounge. Or a tradition where graduating seniors write letters of advice to incoming freshmen, sealed and delivered on the first day of school. These aren’t fluffy extras. They’re the heartbeat. They create a shared memory and a sense of belonging that outlasts any individual class or teacher. Dr. Chu remembers one school that started every faculty meeting with a “warm welcome”—a brief story about a student who had done something kind that week. At first, it felt forced. But over time, it quietly shifted the staff’s attention away from discipline headaches and toward the small moments of character they might otherwise have missed.
3. The Language of Possibility
Listen to how people talk in a school, and you’ll hear the culture. In some buildings, the air is thick with deficit language: “These kids can’t,” “Their parents don’t care,” “We don’t have the resources.” In others, you hear a different grammar: “How might we reach him?” “What else can we try?” “Let’s figure this out together.” This isn’t empty cheerfulness. It’s a sign of collective efficacy—the shared belief that the staff, together, can make a difference. Dr. Chu has seen schools with strong collective efficacy outperform demographically similar schools, even when funding and class sizes are comparable. The language of possibility is both a symptom of that belief and a way of reinforcing it every single day.
Reading the Building Itself
You can learn a lot about a school’s culture just by walking through it with your eyes open. The physical space is a text, and it’s waiting to be read. Dr. Chu suggests paying attention to a few specific details:
Student work on display: Is it current, or is it from three years ago, faded and curling at the edges? Is it only perfect, polished final drafts, or do you see the messy process—revisions, crossed-out sentences, sticky notes with peer feedback? A school that shows only flawless work is quietly saying that performance matters more than growth. A school that displays drafts and revisions is saying that the journey of learning is worth something.
Signage and language: Read the signs on the walls. Do they say “No running, no shouting, no gum,” or do they say “Walk safely, use quiet voices, keep our school clean”? The first is a list of commands. The second is an invitation to shared responsibility. The difference is subtle, but it shapes how students see themselves—as potential rule-breakers to be controlled, or as community members to be trusted.
Common spaces: How do the library, cafeteria, and hallways feel? Are they alive with activity, or empty and silent? In a healthy culture, common spaces feel owned by the students. You might see a group rehearsing a skit in the lobby, or a student council poster advertising a food drive, slightly crooked and clearly made by hand. In a weak culture, these spaces feel like no-man’s-land—sterile, unclaimed, and a little sad.
The Shadow Side: When Culture Turns Toxic
Not all strong cultures are good ones. Dr. Chu is careful to point out that some schools have a powerful culture—but one built on competition, exclusion, or quiet fear. A school can have impressive test scores and a deeply toxic culture where students cheat to protect their rank, where teachers shame kids into performing, or where bullying is shrugged off as “just how it’s always been.” That’s why culture has to be examined with a critical eye, not just celebrated. A truly healthy culture is inclusive, growth-oriented, and humane. It values the quiet, curious student as much as the valedictorian. It supports the new teacher as much as the veteran department head.
One warning sign Dr. Chu watches for is what he calls “ghost stories”—narratives about certain students or families that get passed from teacher to teacher, year after year. “Watch out for the Smith boy; his whole family is trouble.” These stories become self-fulfilling prophecies, poisoning a child’s experience before they even step into the classroom. A healthy school actively interrupts these narratives and insists on seeing each student with fresh eyes.
Culture as a Leading Indicator
Test scores are a lagging indicator. They tell you what happened last year, after the culture had already done its work. If you want to know what test scores will look like two years from now, look at the culture today. Are teachers collaborating in ways that feel meaningful, not just mandatory? Do students feel a genuine sense of belonging? Is there a shared vision that goes beyond “raising scores”? These are the leading indicators that predict not only academic outcomes but also student well-being, teacher retention, and community trust.
Dr. Chu encourages school boards and parent groups to ask different questions during school visits. Instead of “What is your average SAT score?” ask “How do you onboard new teachers into your culture?” Instead of “How many AP courses do you offer?” ask “How do you make sure students in non-AP courses feel equally valued?” These questions reveal whether the school is a true learning community or just a credentialing factory.
Practical Steps for Cultivating a Positive Culture
Changing a school’s culture is slow, deliberate work. It won’t happen through a one-day workshop or a new strategic plan document. Dr. Chu offers these starting points for school leaders and teacher teams:
Conduct a culture audit. Gather a diverse team—students, teachers, support staff, parents. Give them a simple prompt: “Walk through the school and note everything that sends a message about what we value.” Then talk about what you found. Are the messages aligned with your stated values? Where are the gaps?
Identify and amplify bright spots. In every school, there are pockets of excellence—a teacher whose classroom hums with engagement, a custodian who knows every student’s name, a counselor who has created a safe haven. Find these bright spots and study them. What are they doing differently? How can their practices be shared and adapted, not imposed?
Create new rituals intentionally. Don’t just add more meetings. Design experiences that build connection and shared purpose. Start small: a five-minute “gratitude circle” at the end of each staff meeting, or a “student spotlight” segment at board meetings where a student shares their learning journey in their own words.
Hire for culture contribution, not just credentials. When interviewing candidates, ask questions that reveal their alignment with your school’s values. “Tell us about a time you collaborated with a colleague to solve a problem.” “How do you build relationships with students who are initially resistant?” Skills can be taught; a disposition toward community and growth is harder to instill.
Frequently Asked Questions
How is school culture different from school climate?
School climate is the mood, the weather—it can shift day to day based on events like a big game or a disciplinary incident. School culture is the underlying geology, the deep patterns of belief and behavior that persist over time. A school can have a positive climate on a sunny day but a toxic culture underneath. Culture shapes climate, not the other way around.
Can a school have a strong culture and still have low test scores?
Absolutely. A strong, healthy culture in a school serving high-poverty communities might show up as remarkable resilience, high student engagement, and strong graduation rates, even if standardized test scores lag behind affluent districts. The culture is the foundation that keeps students coming to school, keeps teachers from burning out, and builds the trust needed for long-term improvement. Scores may eventually rise, but the culture is an achievement in itself.
What is the first step a new principal should take to understand the existing culture?
Dr. Chu recommends a “listening tour” that includes not just teachers and parents, but also students, cafeteria workers, bus drivers, and front office staff. Ask everyone the same three questions: “What makes you proud of this school?” “What would you change if you could?” and “What do you need to be successful here?” The patterns in the answers will reveal the culture more honestly than any official document.
How long does it take to change a school’s culture?
Meaningful culture change is a three-to-five-year endeavor, at minimum. Quick fixes create cynicism. The key is to make small, consistent changes that accumulate over time, and to celebrate incremental progress. Dr. Chu often says, “You don’t transform a culture by declaring a new one; you transform it by noticing and nurturing the best of the one you already have.”
