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7 Jul 2025

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Teacher Takeover: How Riley Sinn turned a review game into a nationwide AP community

From a single YouTube upload to a nationwide AP community! Meet Riley Sinn, a Minnesota teacher using livestreams, student-led Discord study groups, and Kahoot! to make exam prep more engaging—and way more connected.

Teacher, Mr. Riley Sinn, with "AP Human Geography and psychology curriculum"

When Riley Sinn started a small, student-facing YouTube channel in 2017, it was just meant to support the students in his own AP Human Geography class in Minnesota. Fast forward a few years—and a few thousand subscribers later—and Riley has grown that quiet classroom tool into a nationwide learning movement powered by community, creativity, and Kahoot!.

From Classroom videos to national livestreams

Originally created to host supplemental review videos and study tools, Riley’s YouTube channel saw a major shift in 2020 when COVID-19 changed the shape and dynamic of classrooms everywhere. Luckily, Riley was ahead of the curve. Having already been creating on YouTube for three years, he was familiar with the video format and production tools needed to curate and deliver engaging and effective instruction. To keep his students engaged and learning at the same pace, he started livestreaming lessons—and it worked. Not only did it keep his class together, but it also created a welcoming space for students far beyond his own zip code.

Soon, students across the country—especially from states like Texas and New York—started tuning in to his streams. There was no paid promotion, no big marketing push. Just word-of-mouth and consistent, thoughtful content that made AP test prep a little more manageable—and a lot more fun.

“Kahoot! helped keep students together at a whole-group pace. It gave us a fun, focused way to stay connected during a chaotic time.”

Riley shares, on his introduction to Kahoot! during virtual teaching amidst COVID restrictions

Mastering the art of Kahoot! for AP test review

Riley now creates seven to eight custom kahoots per course—one for every unit in the AP Human Geography and Psychology curriculum. Each Kahoot includes approximately 25 carefully crafted questions aligned to the College Board’s Course and Exam Description (CED), designed to run as a 40-minute review session that covers about a month’s worth of content.

Which type of memory is being utilized here?

Creating the questions takes precision. The character limit pushes him to get creative with textbook definition and key terminology, so he often adds a slide image with more context or visuals, which students can read alone, or even he reads aloud. It’s all part of his goal: to help students find an effective, engaging way to prep for their AP exams.

“It’s about helping students prepare in a way that actually makes sense for how they learn best,” says Riley.

Building a student-led learning network

But Riley didn’t stop at YouTube. To continue connecting and supporting student, he built a thriving Discord server—a digital study hall of sorts—with more than 26,000 members. Moderated by both teachers and student volunteers, the server includes daily review questions, student-run study groups, and lively conversations around academic content.

In fact, much of the community’s growth and evolution has been led by students. They’ve come to Riley with ideas for how to grow and organize, and he’s worked alongside them to bring those ideas to life. The result? A model of collaborative, student-empowered learning that continues to expand every year.

The Ultimate review, powered by passion

Riley’s latest project, the Ultimate Review Packet, brings it all together—combining video content, practice tools, and collaborative student livestreams into one shared ecosystem of learning. It’s another way his work is scaling organically, fueled by authenticity, connection, and a genuine love of teaching.

Join the movement

Riley’s story is a testament to what happens when educators meet students where they are—and invite them to lead. Whether you’re teaching AP courses or looking for new ways to build classroom community, Riley’s work is proof that big things can grow from small beginnings.

Want to see how Kahoot! can help you stay connected with students at scale? Start building your own review kahoots today—or get inspired by the thousands of teacher-made games already available across Kahoot! Discover.

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