/Companies

Primer

Miami, US · Founded 2019 · 32 known investors

Find your way into Primer

Sign up to see every warm intro you have to Primer

  • Paths you didn't know you had: your email and LinkedIn already hold routes to the Primer team. We find them for you
  • 2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
  • Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Primer operates a network of microschools blending human instruction with technology to personalize learning for K-12 students, addressing education gaps in math and reading.

Also known as Primer Microschools

Founders & leadership

Primer was founded in 2019 by Ryan Delk.

RDRyan Delk
Ryan DelkFounderHe previously spent four years at Omni, rising from VP Growth to COO, and before that led growth and partnerships at Gumroad. He also serves on the boards of Schools for America and Kit, and on Delta Air Lines' tech advisory board.
GL
Gabriel Le RouxFounder
JB
John BohannonFounder
MS
Maksim StepanenkoFounder
PA
Paul AnthonyFounder
SG
Sean GourleyFounder

Investors · 32

Funding

SEC filings, press & company announcements

$100M disclosed across 1 round · 2026

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

Primer operates a network of small, in-person K-8 schools modeled on the one-room schoolhouse, with mixed-grade classrooms (for example combined K-2 groups) and small campuses. Its stated academic focus is mastery of reading, writing, and mathematics, framed around what it calls the building blocks of alphabet, arithmetic, and agency, alongside self-directed student projects called "Pursuits." The company describes a deliberately selective use of classroom technology rather than a maximal or minimal approach.

The company began as an online education business. Its original product gave parents infrastructure for homeschooling, including a Navigator tool for meeting state homeschooling compliance requirements, a library of digital instructional resources, and interest-based clubs allowing students from across the country to study topics in depth. In April 2022 Primer announced its Microschools product, opening its first sites in Miami in August 2022 for third through sixth graders, with each school intended for roughly 10 to 20 students and built around technology-enabled, self-paced learning supported by one-on-one attention from Primer educators. By December 2022 the internet-only products had been paused and Microschools became the sole way to access Primer.

Primer positions itself as an alternative to what its CEO Ryan Delk has described as a "public-private duopoly" in American K-12 education, arguing that the conventional system is oriented toward college admission and job placement rather than helping students reach their potential.

Founding story

Primer was co-founded in 2019 by Ryan Delk (CEO) and Maksim Stepanenko (CTO), who were introduced by On Deck co-founder Erik Torenberg. Delk was homeschooled in Florida for about nine years by his mother, a former public school teacher, attended the University of Florida, dropped out, and worked in tech in San Francisco at Gumroad and then the storage startup Omni. Stepanenko attended traditional school in Kyrgyzstan, where homeschooling was illegal, won medals at the International Physics Olympiads, studied at MIT, interned at Google, and spent five years as an engineer at Coinbase. The pair launched Primer as an online alternative to conventional education, with the platform debuting in November 2019.

Business model

Primer operates its own in-person microschool campuses, charging tuition to families and using state scholarship and funding programs to keep tuition accessible. Its earlier model offered internet-only homeschooling support products, including a compliance Navigator, a digital instruction library, and interest-based clubs; those were sunsetted in favor of the school network.

Tuition paid by families for enrollment at Primer campuses, supplemented by state scholarship and funding programs the company says it leverages to keep tuition accessible.

Traction

Primer had 18 employees and $18.7 million in total funding as of April 2023, and four South Florida campuses as of July 2023. Investors named in secondary coverage include Founders Fund, Khosla Ventures, Sam Altman, Lachy Groom, Ryan Petersen, and Tony Xu.

Latest developments

Primer's site presents programs across grades K-2, 3-5, and 6-8, along with tuition, real estate, fellowship, newsroom, and careers sections, indicating an operating multi-campus school network.

▸Full profile — market position, technology, go-to-market, geography, history

Market position

Primer competes in the US K-12 education market as a microschool operator offering an alternative to public and private schools. Contrary Research framed its opportunity against widespread dissatisfaction with US public education, citing that only 42% of US adults surveyed by Gallup in 2022 were satisfied with K-12 education and that the US spends $764.7 billion annually on public education.

Primer combines physical, small-scale campuses with mixed-age classrooms and self-paced, technology-enabled instruction, positioning itself against both traditional public and private schooling. It emphasizes accessibility by using state scholarship and funding programs to lower tuition, and student agency through self-directed "Pursuits" projects.

Technology

Primer's schools use technology-enabled, self-paced learning programs that let students progress at their own speed with one-on-one support from educators. The company describes its stance as "the right tech": tools chosen to serve learning and cultivate digital habits rather than maximizing or minimizing screen use. Its earlier online products included a homeschooling compliance Navigator and a digital instruction library.

Go-to-market

Primer markets directly to parents through its website, with enrollment and admissions funnels, campus-finder tools, and published tuition information. It also runs a fellowship program and recruits educators directly, and highlights parent testimonials as social proof.

Families with children in kindergarten through eighth grade seeking an alternative to conventional public and private schools; initially, homeschooling parents.

Geography

Primer's campuses began in Miami and, as of July 2023, comprised four South Florida locations: Coconut Grove, Liberty City, the Miami Health District, and Kendall. Contrary Research listed the company's headquarters as San Francisco, California, as of April 2023.

History

Primer launched publicly in November 2019 with free homeschooling resources for parents. When the COVID-19 pandemic pushed families into homeschooling, the company expanded its beta beyond existing homeschoolers. In April 2022 it announced Microschools after hiring Ian Bravo, previously founding principal at KIPP Miami, and opened its first campuses in Miami in August 2022 for grades three through six. By December 2022 Microschools had become the company's core offering, with homeschooling and Clubs products retired. As of July 2023 it operated four South Florida campuses in Coconut Grove, Liberty City, the Miami Health District, and Kendall. The company now offers programs spanning kindergarten through eighth grade and runs a fellowship program for educators.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
CampusesJul 20234 campuses
EmployeesApr 202318 people
Students per MicroschoolAug 202210-20 students
Total funding raisedApr 2023$18.7M

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Related companies · 3

Companies working in the same space as Primer.

Timeline · 4

launches, deals, and filings
Jul 2023
Four campuses operating across South Florida

As of July 2023, Primer operated four campuses in Coconut Grove, Liberty City, Miami Health District, and Kendall.

source ↗

Dec 2022
Shift from internet-only products to in-person Microschools

As Microschools rolled out in the 2022-2023 school year, Primer sunsetted its homeschooling and Clubs products, making Microschools its core offering.

source ↗

Aug 2022
First Microschool campuses open in Miami

Primer opened its first Microschool locations in Miami for students in third through sixth grade, designed for 10-20 students each, with plans to expand to other states.

source ↗

Apr 2022
Primer announces launch of Microschools

Primer announced the launch of its in-person Microschools product after hiring Ian Bravo, who had previously built microschools in Florida.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

▸Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does Primer do?
Primer runs a network of small in-person K-8 microschools with mixed-age classrooms and self-paced, teacher-led instruction.
Who founded Primer?
Primer was founded by Ryan Delk in 2019.
Who are Primer's investors?
Primer's investors include Cubit Capital, Designer Fund, Earl Grey Capital, Elevate Ventures, Expa, Gaingels, Hyperguap, Innovation Depot and 24 more.
How much funding has Primer raised?
Primer has disclosed $100M raised across 1 round.
Where is Primer headquartered?
Primer is headquartered in Miami, US.