Delaware · Nonprofit
SUSSEX MONTESSORI SCHOOL INC
SUSSEX MONTESSORI SCHOOL INC (Delaware) receives grants from 12 organizations whose IRS filings report $3,417,565 to it, the largest being LONGWOOD FOUNDATION INC ($2,325,000). 7 of them have funded it in more than one year.
- Revenue FY2025
- $8.1M
- Funders on record
- 12
- Grants received
- $3.4M
- Net assets
- $4.5M
What Sussex Montessori School Inc does
Mission
The mission of the school is to nurture the development of empathetic, collaborative, persistent and innovative global and community citizens in accordance with the time-tested philosophy of maria montessori.
As stated on its FY2025 Form 990.
Program
The '24/'25 academic year was the school's fourth year of school operations. There were 383 students enrolled.the school uses the montessori method to educate children through authentic personalized learning experiences, respectful relationships, opportunities to innovate, and a focus on global citizenship. The school enrolls students aged 5-12 years old (kindergarten through grade 6) who wish to participate in the montessori approach. The school provides an option for families who seek a brain-based, child-centered, differentiated learning environment.the school uses the responsive classroom approach to develop a consistent and coherent positive school environment across the school community. This research-based approach has been shown to positively impact student achievement, improve teacher-student interactions, and increase the amount of time children are engaged in the classroom. The responsive classroom approach provides a framework for the social climate of the montessori classroom and school.a distinctive feature of a montessori school is the celebration of cultural and global awareness. The immediate and extended families of montessori students are an integral part of the…
$7,169,157 spent$27,778 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $7,169,157.
The organization over time
Each line starts at 100 in 2019, so what you read is the shape rather than the size: 150 means half as much again as 2019, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2021 to 2022, from $10M to $18M (+74%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2020 11% · 2021 86% · 2022 76% · 2023 90% · 2024 90% · 2025 83%. Grants only. Government contracts and fees sit inside program revenue.
98% of SUSSEX MONTESSORI SCHOOL INC’s revenue is contributions — more reliant on donations than three-quarters of its peers (48% for the typical peer).
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 7 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Board chair
Patricia Hermance
Chair
As listed on its FY2025 Form 990.
Who funds it, year by year
2018 → 2023: the base broadened from 1 funder to 5 funders, grant income fell $500k → $114k.
5 of 12 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 22% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
Left out of every figure on this page: $1.2M from one payer (the payer shares this organization's board, largest Montessori Works Inc). These are real filings, and they are not money SUSSEX MONTESSORI SCHOOL INC raised.
From the IRS filings of SUSSEX MONTESSORI SCHOOL INC’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
SUSSEX MONTESSORI SCHOOL INC leans on a few funders — its largest provides 68% of grant income and the top three 89%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2018 100% · 2019 100% · 2020 79% · 2021 46% · 2022 69% · 2023 65% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How long its funders stay
33% of SUSSEX MONTESSORI SCHOOL INC's funders are still giving 2 years after their first grant; 58% give in more than one year at all.
Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.
Where its funders are
100% of SUSSEX MONTESSORI SCHOOL INC's grant income comes from Delaware funders.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $745k arriving through sponsors registered in 5 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Against its field
SUSSEX MONTESSORI SCHOOL INC has grown faster than three-quarters of the 9,398 education nonprofits its size.
this organization peer median middle 50% of peers· 9,398 education nonprofits $1M–$10M, FY2025
Government funding SUSSEX MONTESSORI SCHOOL INC receives
Grants and contracts to this organization from federal (USASpending) and state checkbooks, reconciled to its EIN. $2.4M on record — $399k federal, $2.0M state.
- Department of Agriculture$399k
- INTEREST PAYMENT$723k
- FOOD SERVICE$676k
- PRINCIPAL PAYMENT$334k
- BUILDING MATERIALS$200k
- REVENUE REFUND$50k
- COMPUTERS$5k
Federal grants vs contracts are distinguished; state line items keep their reported category. Matched by name + geography (the BMF), so coverage is partial and precision-first.
Organizations like SUSSEX MONTESSORI SCHOOL INC
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Delaware
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
89% of spending goes to programs.
Governance
Footprint & structure
Part of a family of 1 related entity
- Montessori Works Inc · exempt
Screen this organization
A dated, signed PDF of the compliance screen for SUSSEX MONTESSORI SCHOOL INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds SUSSEX MONTESSORI SCHOOL INC?
- SUSSEX MONTESSORI SCHOOL INC (Delaware) receives grants from 12 organizations whose IRS filings report $3,417,565 to it, the largest being LONGWOOD FOUNDATION INC ($2,325,000). 7 of them have funded it in more than one year.
- How many funders does SUSSEX MONTESSORI SCHOOL INC have?
- IRS filings report 12 organizations giving $3,417,565 in grants to SUSSEX MONTESSORI SCHOOL INC, 7 of which have funded it in more than one year.
- Who is the largest funder of SUSSEX MONTESSORI SCHOOL INC?
- LONGWOOD FOUNDATION INC is the largest funder on record, with $2,325,000 in grants. The full list of funders is on this page.
- How can an organization like SUSSEX MONTESSORI SCHOOL INC find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Delaware. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Sussex Montessori School →
These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2019–2025), and the filings of 12 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing