Mathematical Staircase FY2022 filing
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Teaches talented students mathematical thinking and writing through summer programs. For fiscal year 2022 it reported $495K in revenue, $524K in expenses, and $196K in net assets.Pt I
Summary of the Filing
Where the work happens
Mathily
a residential summer program for mathematically gifted high-school students. Number of students enrolled was 44 in a 5-week program of courses, presentations and leisure activities. Eight trainees (staff members) also benefitted.
Mathily-Er
Similar to MathILy with slightly younger students and who are earlier in their mathematical development. Number of students enrolled was 31 in a 5-week program of courses, presentations and leisure activities. Six trainees (staff members) also benefitted.
Mathily-Est
A Research Experience for Undergraduates (REU) focused on beginning college students. Number of students enrolled was 10 in an 8-week program focused on a program of research, presentations, interactions with the MathILy students and leisure activities.
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Identity & Classification
Governance & Policies
Officers, Directors & Key Employees
Sarah-Marie Belcastro PHD’s $46K as President and Chair of the Board is at the 37th percentile of top reported officer pay among 1616 $100K–1M education nonprofits. Peer set: organizations in the same NTEE major field of work and revenue-size band, compared on each org’s own highest-paid officer/key-employee, from Form 990 Part VII / 990-PF Part VIII. Descriptive placement, not a verdict on whether the pay is appropriate.
Compensation history total reportable pay by year · 3 named individuals · Part VII
| Name | FY2025 | FY2024 | FY2023 | FY2022 | FY2021 | FY2020 |
|---|---|---|---|---|---|---|
| Sarah-Marie Belcastro PHD | $45,983 | $49,140 | $44,098 | $39,114 | $35,596 | $29,648 |
| Hannah Alpert PHD | $3,337 | — | — | $4,328 | $4,244 | $5,530 |
| Emily Peters PHD | — | — | $3,049 | — | $472 | $943 |
Total reportable compensation (Form 990 Part VII column D / Schedule J column E) by filing year, matched by name within this organization. The Schedule J base / bonus / deferred breakdown is not parsed into this dataset.
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Statement of Revenue
Statement of Functional Expenses
Balance Sheet
Financial Metrics
Same NTEE category, revenue band, and state where available. Descriptive — not a grade.
| Metric | This org | Peer median | Percentile |
|---|---|---|---|
| Program ratio | 100% | — | — |
| Overhead ratio | 0% | — | — |
| Fundraising cost ratio | 0% | — | — |
| Revenue growth | 122% | — | — |
| Investment management fee ratio | 0% | — | — |
| Legal fee ratio | 0% | — | — |
| Accounting fee ratio | 0% | — | — |
| Fundraising fee ratio | 0% | — | — |
Straight from the Form 990 — descriptive, not an evaluation. A ratio is hidden when its base is zero or too small to be meaningful; the dollars are always shown.
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