Real Examples: High School Students Building Real-World Impact

You Do Not Have to Wait Until Adulthood to Change the World

There is a persistent myth that meaningful real-world impact requires decades of experience, advanced degrees, or deep pockets. The stories in this article prove otherwise. Each of the young people profiled here launched their most important work while still in middle school or high school, often before they could even drive a car.

What connects them is not genius-level talent or unusual privilege. It is a willingness to notice a problem, refuse to accept it, and take action -- even when no one expected them to. Their stories offer a blueprint for any high school student who wants to do something that matters.

If you are ready to start your own journey, explore Loona's programs designed to help students just like you build real products that create real-world impact.

Gitanjali Rao: Science as a Tool for Real-World Good

At age 11, Gitanjali Rao watched news coverage of the Flint, Michigan water crisis and decided she needed to do something about it. She developed Tethys, a portable device that uses carbon nanotube sensors to detect lead contamination in drinking water faster and more cheaply than traditional testing methods. Her invention earned her the Discovery Education 3M Young Scientist Challenge in 2017 and a $25,000 prize.

But Rao did not stop there. She went on to create Epione, a diagnostic tool for early detection of prescription opioid addiction, and Kindly, an anti-cyberbullying app powered by artificial intelligence and natural language processing. In 2020, TIME magazine named her the first-ever Kid of the Year. She is now studying biological engineering at MIT, where she has worked at the Koch Institute for Integrative Cancer Research on extended-release vaccines.

What you can learn: You do not need to invent something entirely new. Rao applied existing technology -- carbon nanotubes, machine learning -- to problems she cared about. Start by identifying a problem that frustrates you and research what tools already exist that could be applied in a new way.

Malala Yousafzai: The Power of Speaking Up

Malala Yousafzai began advocating for girls' education in Pakistan's Swat Valley at age 11, writing a blog for the BBC about life under Taliban rule. After surviving an assassination attempt at age 15, she became a global symbol for the right to education. At 17, she became the youngest person ever to receive the Nobel Peace Prize.

Through the Malala Fund, she has invested in education programs across Pakistan, Afghanistan, Brazil, India, Nigeria, and beyond. The organization works to secure up to 12 years of free, safe, quality education for every girl around the world. Her memoir, "I Am Malala," has been translated into dozens of languages and inspired millions of young people to stand up for their right to learn.

What you can learn: Malala's story shows that advocacy itself is a form of real-world impact. You do not always need to build a product or start a nonprofit. Sometimes the most powerful thing you can do is tell a story that forces people to pay attention. Writing, speaking, and organizing are legitimate and powerful forms of changemaking.

Marley Dias: Representation Starts with Action

In 2015, 11-year-old Marley Dias was frustrated that the books assigned in her school almost never featured Black girls as main characters. Instead of just complaining about it, she launched the #1000BlackGirlBooks campaign with a simple goal: collect 1,000 books featuring Black female protagonists and donate them to schools and community organizations.

The campaign went viral. Dias collected over 13,000 books, gained more than 10 billion media impressions, and was featured on The Ellen Show, BBC, CBS This Morning, and NPR. At 13, she became the youngest person ever named to the Forbes 30 Under 30 list. She also authored her own book, "Marley Dias Gets It Done: And So Can You!" and spoke at the White House United State of Women Summit alongside Michelle Obama and Oprah Winfrey.

What you can learn: Dias identified a specific gap -- the lack of diverse representation in children's literature -- and created a concrete, measurable campaign to address it. Your project does not need to be complicated. A clear, focused goal with a strong message can generate enormous momentum.

Kelvin Doe: Building Solutions from Nothing

Growing up in Freetown, Sierra Leone, Kelvin Doe had almost no access to electricity or technology. But starting at age 10, he began scavenging electronic components from trash bins and teaching himself engineering. By 13, he had built his own batteries and generators from discarded materials, providing light to homes in his neighborhood.

At 14, Doe constructed an FM transmitter and antenna, launching a community radio station where he broadcast news and played music for his neighbors -- all powered by a generator he built himself. His ingenuity earned him recognition through Innovate Salone, Sierra Leone's national innovation challenge, and he became the youngest person ever invited to MIT's Visiting Practitioners Program. He went on to found the Kelvin Doe Foundation, which creates collaborative STEAM learning spaces to empower communities through maker culture and hands-on education.

What you can learn: Doe's story demolishes the excuse that you need expensive equipment or perfect conditions to make an impact. He worked with literal garbage and built something his community needed. Focus on what you have, not what you lack.

Greta Thunberg: One Person Can Shift Global Conversation

In August 2018, 15-year-old Greta Thunberg sat alone outside the Swedish Parliament with a hand-painted sign reading "School Strike for Climate." Within months, her solitary protest had sparked Fridays for Future, a global youth climate movement involving millions of students in over 150 countries.

Thunberg addressed the United Nations Climate Action Summit, the World Economic Forum at Davos, and the European Parliament. She was named TIME Person of the Year in 2019 at age 16, making her the youngest individual to receive the honor. Her blunt, science-driven rhetoric forced world leaders to confront their inaction on climate change in ways that years of traditional advocacy had not achieved.

What you can learn: Thunberg did not start with a detailed strategic plan or a large team. She started with one consistent action -- showing up every Friday. Consistency and authenticity can be more powerful than elaborate strategies. If you deeply believe in a cause, sometimes the most effective thing to do is show up and refuse to stop.

Jack Andraka: A Science Fair Project That Could Save Lives

When a close family friend died of pancreatic cancer, 15-year-old Jack Andraka learned that 85 percent of pancreatic cancer cases are diagnosed too late for effective treatment. He spent months researching the disease, reading open-access scientific papers online, and eventually developed a novel diagnostic test using filter paper coated with carbon nanotubes and antibodies.

His proposed test could detect pancreatic cancer biomarkers in five minutes at a cost of roughly three cents, compared to existing methods that cost hundreds of dollars and took much longer. Andraka won the Gordon E. Moore Award at the 2012 Intel International Science and Engineering Fair, the competition's top prize of $75,000. His TED Talk has been viewed millions of times.

What you can learn: Andraka was rejected by nearly 200 researchers before one professor at Johns Hopkins agreed to let him use a lab. Persistence in the face of rejection is not optional -- it is required. If you are working on something important, expect to hear "no" many times before you hear "yes."

Katie Stagliano: A 40-Pound Cabbage That Fed Hundreds

In third grade, Katie Stagliano planted a cabbage seedling as a school project. That cabbage grew to 40 pounds, and instead of keeping it, she donated it to a local soup kitchen where it was turned into a meal that fed 275 people. That single experience sparked an idea: what if kids across the country grew gardens to feed people struggling with hunger?

Stagliano founded Katie's Krops, which now operates over 100 community and backyard gardens across 33 states. The network has grown and donated more than 680,000 pounds of fresh produce to people experiencing food insecurity. Children ages 7 to 16 apply to become growers, receive starter kits with seeds and supplies, and donate their harvests to local organizations.

What you can learn: Stagliano's organization started with a single vegetable. You do not need a grand vision from day one. Start small, learn from the experience, and let the project grow naturally based on what works. Also notice how she created a replicable model -- empowering other kids to start their own gardens rather than trying to do everything herself.

Zuriel Oduwole: Filmmaking as Advocacy

At age 9, Zuriel Oduwole entered a school competition with a documentary about Ghana's history, conducting interviews with two former presidents of the country. By age 10, she was featured in Forbes. She formally launched her "Dream Up, Speak Up, Stand Up" campaign at age 12 to promote girls' education across Africa.

Oduwole has met one-on-one with over 36 world leaders to discuss education and social development. She has spoken directly to more than 56,000 young people across 23 countries and taught filmmaking workshops to nearly 600 students in eight countries, enabling them to tell their own stories through media. In January 2025, she was nominated for the Nobel Peace Prize for her decade-long work in education advocacy and peace mediation.

What you can learn: Oduwole used a skill she already had -- filmmaking -- as a vehicle for the change she wanted to see. Think about your own skills and interests. Whether it is writing, coding, art, athletics, or cooking, there is almost certainly a way to channel what you are already good at toward real-world impact.

Xiuhtezcatl Martinez: Activism Rooted in Culture

Xiuhtezcatl Martinez began speaking publicly about environmental justice at age 6, drawing on his indigenous Aztec heritage to frame the climate crisis as an issue of cultural survival. By high school, he served as youth director of Earth Guardians, an organization that trains young people to become environmental leaders.

Martinez addressed the United Nations General Assembly at age 15, delivered a spoken-word piece at the UN that went viral, and was part of a landmark lawsuit against the U.S. federal government for failing to protect the climate for future generations. He also released hip-hop music focused on environmental and social justice themes, demonstrating that activism can take creative forms.

What you can learn: Martinez blended cultural identity, art, and legal action into his activism. Impact does not have to look like a science project or a fundraiser. If you connect your cause to something deeply personal -- your heritage, your art, your community's story -- your work will carry an authenticity that resonates with others.

Isra Hirsi: Organizing at Scale

Isra Hirsi co-founded the U.S. Youth Climate Strike in 2019, helping to organize hundreds of thousands of students across the country to walk out of school and demand climate action. At age 16, she was one of the primary organizers behind a national movement that coordinated rallies in every U.S. state.

Hirsi's work has specifically focused on the intersection of climate justice and racial justice, arguing that environmental policies cannot be separated from questions of equity and systemic racism. She has been recognized by outlets including TIME, Teen Vogue, and BET for her organizing work.

What you can learn: Hirsi did not try to be a solo hero. She co-founded a movement, built coalitions, and empowered local organizers across the country. If your strength is bringing people together and coordinating action, that is an incredibly valuable form of leadership. Not every changemaker needs to be the face of the movement -- sometimes the most important work happens behind the scenes.

What These Stories Have in Common

Looking across all ten examples, several patterns emerge:

They started with a specific problem, not a vague desire to help.

Every one of these young people zeroed in on a concrete issue: contaminated water, missing books, food insecurity, education access. Specificity drives action.

They used what they already had.

Rao used science skills. Dias used a love of reading. Doe used scrap electronics. Oduwole used a camera. You already have skills, interests, and resources that can be applied to real-world challenges.

They did not wait for permission.

None of them waited for an adult to tell them it was okay to start. They saw a need and took initiative, often before anyone believed it would work.

They persisted through resistance.

Andraka was rejected 200 times. Thunberg sat alone for weeks before anyone joined her. Impact requires resilience.

They scaled beyond themselves.

Stagliano empowered other kids to grow gardens. Hirsi organized local leaders across the country. The most sustainable impact comes from building systems that outlast your personal involvement.

Your Turn

These stories are not meant to intimidate you. They are meant to show you what is possible when a young person decides that a problem is worth solving. You do not need to win a Nobel Prize or be named to a Forbes list to make a difference. You need to pick a problem, take the first step, and keep going.

If you are looking for structured guidance to launch your own project, explore Loona's programs where you will learn the skills, frameworks, and strategies that turn good intentions into measurable results. You can also read our guide on how to build your first project for a practical, step-by-step approach to getting started.

The world does not need you to wait. Start now.