Why Students Should Participate in a Stem Hackathon?
STEM hackathons give high school students a unique chance to collaborate with peers and sometimes even industry professionals to solve real-world problems. Unlike typical class projects, where the goal may just be to earn a good grade, hackathons attract participants who are eager to innovate and create meaningful solutions in science, technology, engineering, or math. They’re fast-paced, hands-on, and designed to push you beyond the classroom.
When choosing a project, focus on what excites you most. A theme you’re passionate about will keep you motivated and help avoid burnout. At the same time, be realistic: set a scope that’s achievable within the time and tools you have, but flexible enough to expand if your team wants to take it further. Always consider your project’s potential impact, how it might improve lives, solve a specific problem, or inspire change. And remember, hackathons are about teamwork. The best projects leave space for each team member to contribute their strengths.
With that in mind, let’s dive into 20 inspiring hackathon ideas to spark your creativity and get you started.
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1. Smart Recycling Bin
Build a sensor-based bin that can automatically sort different types of recyclables, such as plastic, paper, and metal. You can also track the reduction in waste over time and even gamify recycling by rewarding users for their eco-friendly actions. This project is a great blend of hardware, coding, and sustainability, making it both impactful and practical.
2. Air Quality Tracker
Design a portable device or app that measures air quality in real-time, displaying data such as dust, CO₂ levels, or pollen counts. You can connect it to a map to help users identify clean-air zones and avoid polluted areas. This project ties together environmental awareness and technology, while also creating something people could use daily.
3. Mental Health Check-In App
An app that helps students track their daily moods and mental well-being can make a big difference. You could integrate features like mood journals, breathing exercises, or mindfulness prompts. Beyond coding, this project emphasizes empathy and social impact, showing how technology can promote wellness.
4. Fitness Gamification App
Turn exercise into an engaging challenge by creating an app that rewards users with points, badges, or even AR-based achievements when they complete workouts. You can add social features like team challenges or leaderboards to keep people motivated. It’s a fun way to promote health and fitness while flexing your design and app-building skills.
5. DIY Weather Station
Use sensors to measure temperature, humidity, and rainfall, then display the data through a custom app or website. You could also compare your station’s data with official forecasts and analyze differences. This hands-on project combines hardware tinkering, coding, and data visualization, giving you a taste of real-world scientific research.
6. Adaptive Learning Game
Design an educational game that adjusts its difficulty in real time based on the user’s performance, helping learners stay challenged without becoming frustrated. This could focus on math, coding, language skills, or any subject of your choice. You’ll practice programming logic, UX design, and educational theory while making learning fun. Adaptive features ensure each player gets a personalized experience, showcasing your ability to combine tech and pedagogy.
7. AR Historical Tour App
Develop an augmented reality app that brings local historical landmarks to life through a smartphone or tablet camera. Users could view historical events, see recreated scenes, or explore hidden facts layered over real-world locations. This project blends history, storytelling, and AR technology to create interactive learning experiences. It’s ideal for students who love combining creativity with cutting-edge tech.
8. Plant Care Automation
Create a smart system with soil moisture, temperature, and light sensors that automatically waters plants or sends reminders to owners. You could expand the project by tracking growth data or suggesting optimal conditions for different plant species. This project combines IoT, coding, and environmental awareness, making it educational and practical. It also demonstrates your ability to design tech that improves daily life.
9. AI Homework Helper
Build an app that assists students with homework by providing hints, practice questions, or step-by-step explanations. You could incorporate AI to personalize guidance based on the user’s learning style and skill level. This project emphasizes problem-solving and educational technology, showing how AI can support learning. It also lets you explore machine learning, UX design, and practical coding applications.
10. Smart Bike Safety System
Design a system that alerts cyclists about obstacles, low visibility, or traffic hazards using sensors or mobile notifications. You could integrate wearable devices, IoT sensors, or a companion app for real-time updates. This project demonstrates engineering and software development skills while promoting safety and environmental awareness. It’s a practical invention with the potential for real-world impact.
11. Noise Pollution Monitor
Create a device or app that measures noise levels in different environments and maps them visually. You could track patterns over time and suggest quieter areas for study, sleep, or recreation. This project combines environmental science, data collection, and app development. It’s a great way to explore how technology can address urban challenges while raising awareness about sound pollution.
12. Assistive Reading App
Design an app to help students with reading difficulties by converting text to speech, adjusting fonts, or providing comprehension tools. You could incorporate features like progress tracking, word definitions, or reading suggestions. This project merges accessibility, educational tech, and UX design. It demonstrates your ability to create inclusive technology that positively impacts learning.
13. Water Conservation Tracker
Develop a device or app that monitors water usage at home or school and provides actionable tips to reduce waste. You could gamify water-saving behaviors with points, badges, or community challenges. This project combines environmental stewardship with programming, hardware, and data visualization. It’s a tangible way to show how tech can promote sustainability.
14. Interactive Storytelling Platform
Build a platform where users can create their own choose-your-own-adventure stories with graphics, branching narratives, or sound effects. You could include features that allow collaboration or peer feedback. This project merges coding, creative writing, and digital design. It’s perfect for students who want to explore both tech and storytelling skills.
15. Home Energy Dashboard
Create a dashboard that monitors electricity usage in your home and provides suggestions to save energy. You could connect it to smart plugs or sensors to visualize data in real time. This project combines IoT, data visualization, and environmental awareness. It’s a practical way to demonstrate tech skills while promoting sustainable living habits.
16. Personal Finance Simulator
Design a game or app that teaches budgeting, saving, and investing through interactive simulations. You could add challenges, milestones, or AI-based tips to make the experience more realistic. This project blends finance, coding, and educational design, making money skills more accessible to peers. It’s an innovative way to apply tech for practical life lessons.
17. Community Help App
Build an app that connects volunteers with local causes, tracks their contributions, and highlights community needs. You could integrate notifications, rewards, or social sharing features to increase engagement. This project combines software development with social impact. It’s a meaningful way to use technology to strengthen local communities.
18. Gesture-Controlled Robot
Design a simple robot that responds to hand gestures or smartphone controls, performing tasks like moving, picking objects, or following commands. You could explore sensors, motors, and programming logic to bring your robot to life. This project is an exciting introduction to robotics and human-computer interaction. It allows you to showcase creativity and technical problem-solving.
19. AI-Powered Plant Identifier
Develop an AI app that identifies plant species, tracks growth, and provides care instructions. You could integrate image recognition, data logging, and personalized notifications. This project combines AI, environmental science, and user-friendly app design. It’s a creative way to leverage machine learning for educational and practical purposes.
20. School Event Planner
Create an app or platform that organizes school events, tracks RSVPs, manages deadlines, and sends reminders to participants. You could include collaborative features, notifications, or integration with existing calendars. This project merges coding, UX design, and organizational tools. It’s highly practical, addressing a real need in school communities.
Unlock Your Programming Potential: Students in Our ACSL Competition Preparation Class Are More Likely to Secure Awards
Learn From Previous Hackathon Winners
Looking at the experiences of past hackathon winners can be a game-changer. Observing their strategies, project choices, and how they differentiated themselves can inspire your own ideas and help you understand what it takes to succeed. You don’t need to replicate their projects, use their stories as guidance to define your own goals and approach.
1. Winning $100k at the World’s Largest Hackathon – Adrian Humphrey
Adrian Humphrey shares his journey of winning $100,000 at the world’s largest hackathon, discussing the challenges, strategies, and lessons learned.
Watch here
2. $20,000 Hackathon Winner: Her 6-Figure Start-Up & College Dropout Journey
This video features a winner of a $20,000 hackathon, who went on to build a six-figure startup, sharing insights into her journey and experiences.
Watch here
3. I Won $75,000 From Hackathons as an MIT CS Student (Here’s How)
An MIT Computer Science student discusses how he won $75,000 from various hackathons and provides tips for success.
Watch here
4. Be Successful in Your Own Standards (Johanna Feick, Winner of the World’s Largest Hackathon)
Johanna Feick, a winner of the world’s largest hackathon, talks about defining success on her own terms and the importance of personal standards.
Watch here
5. Hackathon Winners Presenting On Stage
A compilation of hackathon winners presenting their projects on stage, showcasing the diversity and innovation in hackathon solutions.
Watch here
Draw inspiration from these stories, but define your own measure of success. Hackathons are opportunities to explore your interests, challenge yourself, and grow as a problem solver.
Prepare for the American Computer Science League with Aralia Education
The American Computer Science League (ACSL) is a prestigious computer science competition for students across the United States and internationally. It challenges participants to apply their problem-solving, programming, and algorithmic skills to a variety of tasks, ranging from theoretical computer science questions to hands-on programming problems.
Overall, the best way to prepare is with a dedicated, experienced instructor specializing in taking students to success in the ACSL Competition. Consider Aralia Education’s ACSL Competition Prep Class. With our expert teachers vetted exclusively from top-ranking US boarding prep high schools and intimate class sizes (no more than 12 students), Aralia’s students consistently excel in the ACSL Competition. Not only will you learn from our teachers, but also from your peers; some of our previous students who participated in the ACSL class are from Choate Rosemary Hall, Concord Academy, Groton School, and Cardigan Mountain School.

ACSL Competition Prep
The program begins with two weeks of dedicated programming practice to provide participants with an opportunity to enhance their skills. Subsequently, each of the 12 ACSL topics is allocated a two-week period, allowing ample time for in-depth exploration and understanding. Prior to each contest, participants are presented with two programming problems that are intentionally unrelated to the current topics. These problems are designed to enhance the coder’s skills and foster comfort in tackling diverse challenges.