Pooja
Sankar

The Origin

The Question She Never Asked

The classroom at IIT Kanpur was full of men. Pooja Nath Sankar sat somewhere in the middle, understood almost nothing, and said nothing about it. The questions piled up inside her. She fell behind. She graduated anyway.

Piazza exists because of that silence. Not despite it - because of it. The company she would eventually build, name after the Italian word for "town square," and scale to 2 million students across 90 countries, was designed with one specific human failure in mind: the fear of looking stupid in front of your peers.

Sankar grew up in a rural village in northern India where electricity was a luxury and girls who reached their teens were often guided toward arranged marriages rather than engineering degrees. She was the first girl from her hometown to sit the IIT entrance exam. She passed. That alone was extraordinary. What happened next was equally improbable - she kept going, kept leaving, kept choosing the harder room.

After IIT Kanpur came the University of Maryland for her master's, then Oracle, then Kosmix - the standard early-career arc of a talented Indian-American engineer making her way through Silicon Valley in the 2000s. She landed at Facebook on the News Feed team. It was 2008. The IPO was coming. Her stock options were vesting.

Then Sheryl Sandberg walked into Facebook as COO and did something unusual: she convened all the female employees and asked them directly how they were doing. What it was like. Whether they felt heard. Sankar listened to the room. She heard herself in it. The patterns women described - the silence, the hesitation, the cost of looking incompetent in a competitive space - those were the same patterns that had followed her from a village in India to a lecture hall in Kanpur to a conference room in Menlo Park.

She left her stock options on the table. Newly divorced, not especially flush, she walked into Stanford Graduate School of Business and started building.

The Company

How You Build a Town Square

The prototype for Piazza was built while Sankar was still a student at Stanford GSB. It is the kind of origin story that would read as invented if it weren't so specific: she was taking an entrepreneurship class - and failing it - because she was too busy running Piazza to study entrepreneurship.

The platform launched publicly in January 2011 at Stanford. The premise was clean: a collaborative Q&A forum where students could post questions anonymously, classmates could answer them together wiki-style, and professors and TAs could weigh in. No raising your hand. No waiting for office hours. No public humiliation. Just a question, posted in a space designed to make asking feel safe.

She was a solo founder. No co-founder. No early technical co-pilot. A classmate told her she could do it alone. She decided to believe them. She raised a small angel round before finishing her MBA, then a $6 million Series A from Bessemer Venture Partners, Kapor Capital, and Felicis Ventures. Sequoia and Khosla Ventures followed. The platform grew steadily, without the viral explosions that make for cleaner startup narratives - just professors recommending it to other professors, students adopting it because it worked, campus by campus.

At peak adoption: 2 million students, over 30,000 educators, more than 1,500 universities, 90 countries, $15.5 million in total funding. The name "Piazza" - Italian for "town square" - was chosen deliberately. A public gathering space. A place where everyone, regardless of rank or confidence, has a right to speak.

The Architecture of Asking

What made Piazza different wasn't the Q&A format - Stack Overflow had existed since 2008, Reddit since 2005. It was the specificity of the use case. Piazza was built for the anxiety of formal education: the fear of appearing dumb in front of a professor, of admitting you missed a lecture concept, of asking something that turns out to have an obvious answer. That fear is universal and extremely well-documented, and no one was solving it directly.

The wiki-style collaborative answering meant that the first student to post a correct answer got confirmed by peers, then endorsed by the instructor. Knowledge accumulated in one place. A question asked at 2am got an answer from another student in a different time zone. The professor woke up to a thread already half-resolved. This was not just helpful to students - it cut instructor workload dramatically, which is why faculty adoption spread so quickly.

2022

The Exit Nobody Expected

In January 2022, thirteen years after founding Piazza, Pooja Sankar stepped down as CEO. The announcement landed quietly in the EdTech press, without the usual drama of founder departures. No board drama, no pivot-gone-wrong. She said she wanted to spend more time with her two young children. She handed the company to Ethan O'Rafferty, former head of partnerships at Amira Learning. She moved to Colorado.

Her stated plans after leaving: teaching at local colleges. Inspiring students to start companies the way her Stanford professors had inspired her. The full arc from student who was afraid to speak to professor who creates the space for others to do so - compressed into one person's working life.

She reflected, in her EdSurge exit interview, on what she'd learned across thirteen years of building a company alone. She talked about the weight of solo founding - not as complaint, but as honest accounting. What it costs to be the only decision-maker. What it costs to believe in a problem so specific and personal that no market research would have validated it. She built Piazza from a feeling, not a spreadsheet.

That's rarer than it sounds. Most startups begin with market maps. Hers began with a memory: a shy young woman sitting in a hard class, knowing she didn't understand, choosing silence over the risk of exposure. The company she built was, in some sense, a letter to that version of herself. You should have asked. Here is the room where it's safe to do so.

The Person

Traits the Resume Doesn't Carry

Sankar's story is told often in terms of grit - the village, the IIT, the Facebook options left behind. That framing is accurate but incomplete. What's less often noted is the specific quality of her intuition: she has a talent for identifying the gap between what an experience is supposed to feel like and what it actually feels like, and then designing for the latter.

At IIT, higher education was supposed to feel like discovery. It felt, for her, like isolation and shame. She designed for what it actually felt like. At Facebook, professional life was supposed to feel like meritocracy. It felt, in some rooms, like navigating invisible hierarchies. Sheryl Sandberg's meeting gave her language for that. Piazza gave her a way to dismantle at least one instance of it.

There is also the matter of timing. She started Piazza in 2009, during a financial crisis, without a co-founder, while pursuing an MBA at a school that gave her a failing grade for her distraction. The company she was distracted building reached 90 countries. The grade didn't follow her.

She has described herself as someone who needed to be told she could do something before she believed it. A classmate told her she could found a company alone. She acted on it. Sheryl Sandberg framed an idea she'd been circling for years. She built it. That dependence on external permission to trust herself - and then the act of honoring that permission with extraordinary discipline - is one of the more human aspects of her story. She did not start out confident. She became competent first and let the confidence follow.

In Her Own Words

The Quotes That Landed

Career

The Trajectory

Education

Three Institutions. One Direction.