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In this inspiring episode of How I Built This, Sal Khan shares the remarkable journey of building Khan Academy from a simple effort to help his cousin with math homework into one of the world's largest free educational platforms. (06:24) Starting in 2004 while working at a hedge fund, Sal began tutoring his 12-year-old cousin Nadia remotely, which evolved into helping multiple family members and eventually creating the first Khan Academy videos on YouTube. (36:06) Despite having no business model and living off savings for months, Sal's commitment to keeping education free led to breakthrough moments including support from philanthropist Ann Doerr and recognition from Bill Gates. The platform now serves over 170 million monthly users globally, offering free world-class education in over 50 languages.
Sal Khan is the founder and CEO of Khan Academy, a nonprofit organization providing free world-class education to anyone, anywhere. He graduated from MIT with a master's degree in computer science and earned an MBA from Harvard Business School. Before founding Khan Academy, Sal worked as a hedge fund analyst, but left his lucrative finance career in 2009 to pursue his educational mission full-time, initially living off savings while building what would become one of the world's most impactful educational platforms.
Guy Raz is the host and creator of How I Built This, NPR's award-winning podcast about entrepreneurs and the stories behind the movements they built. He is also the host of several other successful podcasts and has extensive experience in journalism, having worked as a foreign correspondent and anchor for NPR.
Sal's journey began not with a grand business plan, but with genuine concern for his cousin Nadia's math struggles. (24:12) He offered to tutor her remotely simply because he cared and believed she was capable of learning. This authentic motivation created the foundation for everything that followed. The key insight is that one-on-one tutoring allows you to identify gaps and build confidence - when Nadia retook her placement test months later, she moved from remedial to advanced math class. Practical Application: Look for opportunities to help others in areas where you have expertise, as this often reveals unmet needs and potential solutions.
When Sal's friend suggested making videos for YouTube, his initial reaction was dismissive: "that's like YouTube's for cats playing piano." (36:16) However, he discovered that his cousins preferred the on-demand videos over live tutoring because they could review concepts without shame and learn at their own pace. (37:25) The evergreen nature of math content meant one good explanation could help everyone worldwide. Practical Application: Don't dismiss simple solutions just because they seem unsophisticated - sometimes the most accessible technology creates the biggest impact.
Sal incorporated Khan Academy as a nonprofit in 2008, even before deciding to work on it full-time. (43:03) His reasoning was deeply principled: he never wanted users to suspect he was helping them for any reason other than genuine care for their learning. While he believed in capitalism, he recognized that incentive structures drive organizational behavior, and only nonprofits consistently maintain social missions over time. Practical Application: When building something with social impact, carefully consider how your organizational structure will protect your core mission from conflicting incentives.
After leaving his hedge fund job, Sal spent months burning through $5,000-6,000 monthly in savings while struggling to find funding. (50:31) He experienced severe anxiety, couldn't sleep, and faced social pressure from family who questioned his decision. (50:46) The breakthrough came when philanthropist Ann Doerr wired $100,000 after learning he wasn't supporting himself. (61:22) Practical Application: Prepare for an extended period of financial and emotional stress when pursuing mission-driven work - having support systems and believing in your vision are crucial for surviving this phase.
As Khan Academy grew from a one-person operation to receiving $4 million in funding from Gates and Google, Sal faced the challenge of professionalizing while maintaining the organization's "eccentricity, quirkiness, informality, coupled with depth and intuition." (72:12) He recognized that Khan Academy's success came from its authentic, personal teaching style and wondered whether bringing in more video creators might break the trust students had developed with their "teacher." Practical Application: As you scale, identify the core elements that made you successful initially and create systems to preserve them even as you grow and professionalize.