Overdeck Family Foundation

The Overdeck Family Foundation is one of the fastest-growing private foundations in K-12 education philanthropy, built on the quantitative rigor of its founders. John A. Overdeck — co-founder and co-CEO of Two Sigma Investments, one of the most data-driven hedge funds in the world — serves as Director and President. Laura B. Overdeck, a mathematician and founder of Bedtime Math (a family numeracy initiative), serves as Chair. Their investment philosophy permeates the grantmaking: evidence, measurability, and cost-effectiveness are not preferences but requirements.

The foundation invests exclusively in education through five interconnected portfolios: Early Impact (building kindergarten readiness from birth), Exceptional Educators (teacher preparation, coaching, and professional development), Innovative Schools (student-centered learning environments and strategic staffing), Inspired Minds (hands-on STEM and out-of-school learning), and Data for Action (converting education data into actionable insights). No grants fall outside K-12 and early childhood education — this is not a general philanthropy with an education arm.

The foundation is strictly invitation-only. It does not accept unsolicited proposals. There is no open grant portal and no general application cycle. The primary pathway to engagement is through the foundation's newsletter, which announces open calls and requests for proposals. Organizations may also submit a brief inquiry via the contact form at overdeck.org, though proactive outreach is most effective when the organization can demonstrate a clear, specific portfolio fit with published evidence.

Overdeck builds multi-year relationships with grantees. The typical progression runs: newsletter or field network introduction → initial inquiry → invitation to submit a concept note or LOI → full proposal → possible site visit → multi-year grant. Many of the foundation's largest grantees — Zearn, Khan Academy, Springboard Collaborative, LENA — have received multiple rounds of funding spanning three or more years. First-time applicants should anticipate a relationship-building period before a substantial award, and should frame early interactions as an opportunity to demonstrate alignment and data capacity rather than closing a transaction.

For the foundation's 106 grantee partners collectively reaching 75 million children and 500,000 educators, the implicit bar is high: the foundation favors organizations with the infrastructure, leadership, and evidence base to reach national scale without sacrificing impact per participant.

The Overdeck Family Foundation's financial trajectory is one of the sharpest growth curves in U.S. education philanthropy. Total grants paid climbed from $925,000 in fiscal year 2012 — the foundation's first full year of significant activity after a $70M founding contribution — to $63.4M in FY2024, a 68-fold increase in 12 years. Assets grew in parallel: from $104.6M (FY2012) to $920.4M (FY2024), driven by strong returns on the endowment managed by Two Sigma Investments, which received $649,881 in investment management fees in the most recent filing period.

Five-year grants-paid trajectory: - FY2019: $36.3M - FY2020: $44.1M - FY2021: $45.9M - FY2022: $50.2M - FY2023: $53.5M - FY2024: $63.4M

This represents 74% growth in grants paid from 2019 to 2024. Calendar year 2025 appears to be a further breakout: Q1 ($14.5M, 56 grants) + Q2 ($32.7M, 52 grants) + Q3 ($10.6M) + Q4 ($17.2M, 49 grants) totals approximately $75M — a roughly 18% increase over FY2024 and the largest single-year disbursement in the foundation's history. Q1 2026 has already registered $10.7M.

Individual grant sizes span a meaningful range. Calculated averages from 2025 quarterly data suggest: Q1 2025 = ~$259K average per grant; Q2 2025 = ~$629K average (pulled up by several large multi-year awards); Q4 2025 = ~$351K average. The largest known single grant in 2025 was $6M to Zearn (2-year math platform scaling commitment). The smallest disclosed was $150K to National Math Stars (1-year talent identification program). The most common award range for direct-service organizations appears to be $500K–$2M over two years, with research and field-building organizations receiving $500K–$4M depending on study scope.

Multi-year commitments are the norm, not the exception. Of the 52 grants awarded in Q2 2025, most were structured as 2- or 3-year awards. This means grant-seekers should plan for a funding relationship — not a one-time transaction — and should demonstrate organizational capacity to sustain a partnership over multiple report cycles. The foundation caps indirect costs at 10% of annual direct costs (15% for independent research organizations, 10% for universities in research grants), which compresses effective grant budgets and requires careful financial modeling before proposal submission.

The Overdeck Family Foundation sits in a cohort of New York-area private foundations with assets in the $900M–$943M range. What distinguishes Overdeck from these asset-size peers is its singular education focus and one of the highest payout rates in its cohort — 6.9% of assets in FY2024, well above the 5% IRS minimum for private foundations.

Note: Annual giving for peer foundations is estimated from public IRS 990 filings; Overdeck's figure is from confirmed FY2024 data.

Several distinctions are strategically significant. Overdeck's complete sector specialization means organizations outside K-12 have no pathway to funding, regardless of evidence quality. The William Randolph Hearst Foundation, uniquely among the peer group, runs open grant cycles across multiple sectors — making it the only asset-comparable peer accessible without a prior relationship. The Commonwealth Fund, focused on health care policy, shares Overdeck's evidence-intensity and preference for research-backed interventions but operates in an entirely different sector. Novo Foundation's invitation-only model and preference for nationally scalable organizations makes it the closest structural analog to Overdeck — but its gender equity focus is non-overlapping. For education-focused organizations, no asset-comparable private foundation matches Overdeck's depth of sectoral commitment or the scale of annual giving it directs exclusively to K-12 and early childhood.

The Overdeck Family Foundation entered 2026 with clear momentum and a visible strategic agenda. In Q1 2026, it awarded $10.7M in grants, maintaining a pace consistent with prior first-quarter disbursements and signaling that total 2026 giving will likely exceed $60M for the third consecutive year.

The foundation's most consequential recent activity occurred in Q2 2025, when it awarded a record $32.7M across 52 grants — its largest single-quarter disbursement. Anchor awards included $6M to Zearn (math platform scaling to millions of students), $5M to LENA (Language Environment Analysis, educator coaching reaching 115,000 children), and $4M to Accelerate (funding 10 randomized controlled trials of tutoring models). These three grants alone totaled $15M and signal a deliberate investment in organizations with both strong evidence bases and national-scale infrastructure.

In Q4 2025, the foundation renewed $4M to Springboard Collaborative for family literacy programming serving 50,000+ students, and made two notable AI-focused grants: $1.5M to Leading Educators and $1.5M to Teaching Lab, both specifically for AI-supported professional learning. These grants represent the first dedicated cluster of AI-in-education investments at this scale, consistent with the foundation's publicly stated 2025 research strategy emphasizing generative AI tools.

Personnel note: Ginna Carroll joined as Secretary in November 2024. John A. Overdeck remains Director/President; Laura B. Overdeck continues as Director/Chair. Anu Malipatil serves as Vice President and is the primary operational contact for grantees. No major leadership departures have been announced.

Because the Overdeck Family Foundation is strictly invitation-only, the application strategy is fundamentally relationship-first. There is no cold-submission portal. Concrete steps to position for an invitation:

Build newsletter awareness before anything else. The foundation announces open calls and RFPs exclusively through its newsletter at overdeck.org. Subscribe immediately. Monitor each issue for portfolio-specific solicitations. This is not a formality — it is the primary discovery mechanism.

Identify your portfolio and own the language. Before any outreach, review the five portfolios at overdeck.org/grantmaking and select the single best fit. Use the foundation's exact framing — 'early learning foundations,' 'educator effectiveness and sustainability,' 'student-centered environments,' 'hands-on STEM,' 'data to outcomes' — rather than generic education language. Proposals that attempt to span multiple portfolios signal unclear positioning.

Lead with cost-efficiency data. John and Laura Overdeck's quantitative background means every proposal is analyzed for cost-per-student or cost-per-educator impact. Calculate this metric before initiating contact. Benchmark your cost against comparable programs in the field if possible. This framing should appear in the first paragraph of any inquiry, not as a footnote.

Meet the evidence bar before reaching out. The foundation's six criteria explicitly require a 'testable theory of impact' and evidence-informed decision-making. At minimum, prepare: outcome measurement systems demonstrating student or educator impact, any published or in-progress evaluations (RCTs, quasi-experimental studies preferred), and a plan for research dissemination if funded. Organizations relying solely on anecdotal evidence or internal surveys are unlikely to advance.

Respect the indirect cost cap absolutely. The 10% indirect cost limit (15% for independent research organizations, 10% for universities in research grants) is non-negotiable. Construct your entire budget within this constraint before submitting any inquiry. Do not assume a waiver is possible.

Time inquiries for Q1 to align with the Q2 award cycle. Based on 2025 data, Q2 is consistently the largest giving quarter (Q2 2025: $32.7M vs. Q1 $14.5M, Q3 $10.6M, Q4 $17.2M), suggesting major new commitments are approved in spring. Organizations seeking first-time grants should aim to complete relationship-building and submit concept notes by late Q1.