Piazza
7 known investors
Piazza is a collaborative learning platform that connects students, teaching assistants, and professors to provide academic support and peer learning opportunities. The platform serves higher education institutions and workforce development programs, helping millions of students across universities access help and learn from their classmates.
Also known as Piazza Technologies, Inc. Β· Piazzza
Founders & leadership
Investors Β· 7
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Company profile
researched Aug 2026Piazza is an education technology company operating a web and mobile question-and-answer platform designed to simulate class discussion. Students post questions and notes, and multiple students can collaboratively edit a single "collective" answer in a wiki-style format with version history; instructors post a separate instructor answer beneath it and can endorse, edit, or delete content. Instructors may enable anonymous posting so that reticent students participate, and posts needing immediate action are flagged for the teaching team. The editor supports LaTeX, syntax highlighting and code blocks, file attachments, follow-up discussions, polls, and email notifications, and the product integrates with major learning management systems including Blackboard, Moodle, Coursera, and Microsoft Teams. [0][1][4][7]
Classes are self-contained and can be locked with an access code; the head instructor retains control over content and access to class activity statistics. Enrollment is typically tied to institutional email domains or SSO, and self-enrollment can be disabled in favor of LMS-based enrollment. Additional functionality includes Live Q&A sessions, resource/course-information pages, mobile apps for iOS and Android, accessibility shortcuts, and a "Piazza Network"/Piazza Talent component through which students can control which companies see their network profile. Piazza describes itself as FERPA-compliant. The name derives from the Italian word for a town square or plaza. [0][2][3][4][5][7]
Founding story
Founder Pooja Sankar (also referred to as Pooja Nath) traces the idea to isolation she experienced as a shy female computer science student at the Indian Institute of Technology Kanpur, where she lacked access to study peers. While working as one of few women engineers at Facebook in 2008, a discussion convened by incoming COO Sheryl Sandberg revealed that other women had faced similar gaps in academic support. In an entrepreneurship class she adopted an incremental "baby steps" approach: building wireframes with free trial software, interviewing students and professors, moving in with her brother's family to cut costs, and β after a developer she approached declined the project β teaching herself to build the prototype in her brother's garage in ten days. She then spent $75 on a Craigslist job ad to hire a developer paid in equity, who became Piazza's lead engineer. [6][7]
Business model
Software-as-a-service for education. Piazza's support documentation describes a paid model for Piazza Q&A with instructor and department licenses that can be purchased and managed, and lists an earlier ad-supported model for Piazza Q&A as no longer supported. A separate "Piazza Network"/Piazza Talent offering connects student profiles to companies, with student controls over visibility and exclusion of specific employers. [0][4]
Instructor and departmental licenses for Piazza Q&A are sold and managed through the company's purchasing flow; a previous ad-supported model has been discontinued. A recruiting-oriented Piazza Network/Talent product exists alongside the Q&A product. [0][4]
Traction
Approximately 600 Stanford students were using the service by February 2010; it opened to all institutions in January 2011 and reached over 330 schools and tens of thousands of students by that summer. A 2018-era interview cites two million students across 1,500 universities and 90 countries, and the current site claims over 100,000 professors and 1,500 schools in 90 countries. Company data cited by Wikipedia puts average response time at about 14 minutes. [0][1][6][7]
Latest developments
Current site and product pages show active operation: term selection runs through Fall 2027, the copyright notice reads 2026 for Piazza Technologies, Inc., and support documentation covers Microsoft Teams integration, Live Q&A, paid instructor/department licenses, and the Piazza Network profile controls. The ad-supported Q&A model is listed under "No Longer Supported." [0][2][3][4]
βΈFull profile β market position, technology, go-to-market, geography, history, risks & controversies
Market position
Positioned as a widely adopted class Q&A tool in higher education; the company states over 100,000 professors have used Piazza and that millions of students at roughly 1,500 schools across 90 countries use it. Wikipedia characterizes it as a learning management system in forum format, and press coverage in 2011 identified it as Sequoia-backed. [0][1][6][7]
Combines a single wiki-style collective student answer with a separate instructor answer and endorsement, rather than threaded per-user replies; supports anonymous posting to encourage participation, LaTeX and code formatting for technical courses, and integration with major LMS platforms. [0][1][7]
Technology
Web-based Q&A application with a three-pane interface (post list, post detail, account bar), collaborative editing with version history, LaTeX rendering, syntax highlighting and code blocks, file attachments, follow-up threads, polls, email notification settings, and account merging. Native iOS and Android apps were released in November 2011. Integrations exist for Blackboard, Moodle, Coursera and other LMSs, plus Microsoft Teams. [0][4][7]
Go-to-market
Bottom-up adoption driven by individual instructors, who create and configure a class and invite students, combined with institution-level distribution via school email domains, single sign-on, and integrations with major LMS platforms. Marketing materials feature professor testimonials, how-to videos, subject-specific pages, and a school-search directory; instructors can add a school that does not yet exist in the system. Support is offered by email (team@piazza.com) and a toll-free phone line. [0][1][2][3][4]
Higher-education instructors, teaching assistants and students, primarily at universities and colleges; the site lists large public and private North American institutions such as Arizona State, Georgia Tech, NYU, Stanford, Penn State, Texas A&M, University of Toronto and University of British Columbia. Support materials also describe non-traditional uses including faculty instructional development, conferences and teaching/learning events, and educator collaboration on curriculum. [0][1][4][5]
Geography
Headquartered in Palo Alto, California, with users at roughly 1,500 schools across 90 countries; the school list is weighted toward the United States with Canadian institutions such as the University of Toronto, University of British Columbia, University of Calgary, Carleton University and Brock University also represented. [0][1][7]
History
Pooja Nath (Sankar) created the first Piazza prototype in 2009 during her first year at Stanford Graduate School of Business; Wikipedia gives 2009 as the founding year. About 600 Stanford students were using it by February 2010, and the product launched in August 2010 with almost no initial engagement, leading to a front-end redesign in December 2010. In January 2011 Piazza opened to all institutions, growing to over 330 schools by that summer. The service originally operated as "Piazzza" and dropped the third 'z' in June 2011. iOS and Android apps followed in November 2011. The company subsequently added LMS and Microsoft Teams integrations, a paid licensing model replacing an ad-supported model, and the Piazza Network/Talent product. [4][6][7]
Risks & controversies
The Wikipedia article carries a maintenance banner flagging promotional content as of September 2024, indicating the public encyclopedic record on the company is contested for neutrality. Available sources contain limited recent financial, funding or headcount disclosure; the founder's surname appears variously as Sankar and Nath across sources. [6][7]
Compiled by commissioned research from 8 cited public sources β announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed β not independently audited.
Competitors Β· 1
by search overlapCompanies competing with Piazza for the same Google search keywords, organic and paid, via search-intersection analysis.
Timeline Β· 5
launches, deals, and filingsThe third 'z' was dropped from the company's original name, Piazzza.
Piazza opened beyond Stanford to all institutions, reaching over 330 schools and tens of thousands of students by summer 2011.
The platform launched publicly; initial student participation was minimal, with 12 questions asked over four months, prompting a front-end redesign by December.
Pooja Nath (Sankar) created the first Piazza prototype during her first year at Stanford Graduate School of Business.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
In the news
βΈResearch sources Β· 8
primary sources listed
- Piazzapiazza.com Β· web
8 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Piazza do?
- Piazza is a wiki-style Q&A and class discussion platform used by instructors and students at about 1,500 schools in 90 countries.
- Who founded Piazza?
- Piazza was founded by Pooja Sankar.
- Who are Piazza's investors?
- Piazza's investors include Bessemer Venture Partners, Felicis Ventures, Goldcrest Capital, Kapor Capital, Khosla Ventures, Sequoia Capital, SV Angel.