Jewish day schools teach two curricula. Families are charged for one.
The second curriculum is not free. It costs about a fifth more per student. Across 887 private schools nationally, almost none of that reaches the tuition bill. It lands on donors.
887schools
101Jewish day schools
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6measures compared
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Two curricula, one school day. Families pay the difference.
The belief is reasonable, and worth stating properly before taking it apart. A Jewish day school runs a full general-studies program. It also runs a full Judaic-studies program, with its own faculty, materials and hours. Two programs cost more than one. You can see it in the schedule and on the payroll.
So the cost is real. The skipped question is where it goes. A tuition-charging school has two places to put a cost: the price it asks families to pay, and the money it asks donors to give. There is no third column.
The field has spent a generation auditing the first column — affordability studies, tuition caps, aid formulas — reading the price a family pays as a readout of what a school costs. It is not one. A price is a decision. A cost is a fact. A school can hold one perfectly still while the other moves.
Ask what a Jewish day school costs and you get one answer. Ask who pays for it and you get a different one.
A bus fare tells you almost nothing about the bus.
Two cities. Same fare, same coin in the same slot, same ride across town. In one, the fares cover most of what it takes to run the system. In the other they cover a slice, and a county levy covers the rest.
A rider cannot tell them apart. But if you wanted to know which system survives a bad year, the fare is the last number you would look at. It is the number both cities agreed to keep the same.
What you want is the other half of the sentence. Not what the ride costs the rider. What it costs, and who covers the gap.
Price
A decision
What the institution chooses to ask for. Bounded by what families can bear.
Financing
A structure
Where the rest of the money comes from. Invisible at the point of sale, and the part that breaks.
Every school here has two tuitions. Only one of them is real.
There is the number on the website. Then there is the number the school collects, after aid, scholarships and staff remission come out. The gap can be enormous, and most of the interesting behavior in private-school finance happens inside it.
Net tuition
What a school actually collects per student, after every discount it gives back. Published tuition is what it asks for. When this story says families pay no more, it means the collected number — the one that reaches the bank.
So: where does the premium land?
Six measures, compared with similar schoolsAll six measures
The six measures
The cost premium is exactly where it should be. The price premium is missing.
Six measures, each comparing Jewish day schools against private schools of similar size in similar places. The production side behaves as predicted. Spending runs +20% per student. Staffing, +17% per hundred students. Two programs, more people, more money.
Then the bottom two rows. Net tuition — what families hand over after aid — comes in at −4%, which the model cannot distinguish from zero. Published tuition, no difference at all.
The cost is there. The charge is not.
The one that closes it
Next to this bar, everything else on the chart is a rounding error.
Jewish day schools raise +161% more per student in donations than comparable schools. Two and a half times the rate — the largest effect in the study, and the steadiest. It survives every robustness cut essentially unchanged.
The raw medians say it without any model. The typical comparison school takes in $2,450 per student in giving. The typical Jewish day school takes in roughly twice that.
Not a strong development office bolted onto an ordinary school. The revenue model.
None of that survives unless both kinds of school are everywhere.
Jewish day schools cluster in expensive coastal markets. Compare them against a pool that does not, and you have measured the price of the neighborhood and labeled it the price of the curriculum.
Comparable is doing enormous work in that sentence.
Two things move a school's per-pupil numbers before its curriculum does. Where it is, and how big it is. Small schools spread fixed costs over fewer children. Manhattan schools pay Manhattan wages. Jewish day schools skew smaller and more coastal than the sector. Either fact, left alone, manufactures a premium.
Holding things constant
Each school is compared only against schools in the same census region, of similar size, in the same year. What is left is the part associated with being a Jewish day school in particular, rather than with being small or being coastal.
This is no formality. Raw medians make Orthodox schools look expensive: $22,808 per student against a comparison median of $19,813. Compare them within their own size and region and the sign flips. They collect a third less.
The adjustment is not magic. One result leans on it harder: drop the Canadian schools and the spending premium falls from +20% to +13%, below significance. Staffing and fundraising barely move. Call the cost premium suggestive. The financing gap is not in question.
Where the 887 schools areComparison schools
Comparison schoolsJewish day schools
The pool
The comparison group is not a coastal sample.
786 schools, spread across the continent. 138 in California, 65 in New York, 59 in Florida, with real weight through the Midwest and Mountain West.
The 101 Jewish day schools sit more tightly — California, New York, Massachusetts, New Jersey, Ontario — but they turn up in two dozen more states and provinces, with comparison schools alongside them in every one.
That overlap is the license for the last chart. Without it the model extrapolates rather than compares.
How much tuition schools give backDiscount by school type
The discount
The price story was hiding between the two prices.
Published tuition is unremarkable. Net tuition is unremarkable. Together they reveal a third number: the share of the posted price the school never collects.
Comparison schools give back about 14%. Jewish non-Orthodox schools, 24%. Orthodox schools, 30%.
An ordinary net tuition, reached by an unordinary route: post a normal price, forgive far more of it than your peers. Both Jewish groups sit well above the comparison line and close to each other. Deep discounting is a property of the sector, not of one denomination.
The premium is real. The argument is about whose balance sheet it sits on.
Line the measures up and they stop contradicting each other. A Jewish day school costs about a fifth more to run, charges families the same, and raises two and a half times as much in gifts.
There is no missing money. Every dollar of the premium is accounted for. It simply never touches an invoice.
This is the distinction the field keeps collapsing. What does the dual curriculum cost and who pays for it are two questions with two answers, and only the second is surprising. A generation of affordability work was aimed at the first. That is the wrong instrument. The number that makes these schools unusual is not on the bill families receive. It is on the line underneath.
What families pay
−4%
Net tuition per student, against comparable schools. Indistinguishable from no difference.
What communities give
+161%
Donations per student. Two and a half times the comparison rate, and the most robust finding in the study.
The sustainability question is not why does it cost so much. It is what happens if the giving stops.
The Dual-Curriculum Premium at National Scale, §6
Orthodox schools run that model at its limit.
Split the sample and one group behaves differently. Orthodox schools show no spending premium and no staffing premium — +3.8% more staff, indistinguishable from none. They post prices about a quarter below comparison schools, forgive 30% of it, and collect 31% less net tuition. Non-Orthodox schools do the reverse: +28% spending, +19% staffing.
What holds it up is giving, at +127% above the comparison rate. Lean operation, low price, deep discount, communal subsidy. Four measures pointing one way — hard to write off as noise.
Significant, and thin
Only 11 to 13 Orthodox schools report each measure. A sample that size detects large differences and misses moderate ones. The Orthodox results that cleared the bar carry roughly 60% statistical power — real, but not guaranteed to repeat.
Read forward, the pattern describes a school that works. Full rooms — a median of 316 students against 206 in the comparison pool — priced within reach of families paying several tuitions at once. It works every year the community writes the checks. This data says nothing about the year it stops.
Raising money to cover the gap is ordinary. Doing it at this scale is not.
Nearly every independent school closes some gap between price and cost with philanthropy. At two and a half times the sector's rate, a difference of degree becomes a difference in kind. Philanthropy is not patching a gap in the model. It is the model. Which changes the risk worth watching: not that Jewish schooling becomes unaffordable, but that it becomes unfundable.
What this analysis cannot say
Four limits worth carrying with the finding.
Salaries are suppressed
The benchmarking service withholds school-level salary data in this pool. So the most direct question — whether Judaic-studies and general-studies faculty are paid differently, and whether dual staffing holds wages down — cannot be examined at all. The paper calls it the most important open measurement gap.
The discount is one number
It bundles need-based aid, merit awards and tuition remission for staff. Nothing here separates them. The size of the discount is visible; who receives it is not.
Eighteen Orthodox schools
Only 11 to 13 report each measure. Large differences show clearly, moderate ones would not register, and the cohort under-represents the large yeshiva systems of the New York metropolitan area, most of which do not benchmark with NAIS.
Schools choose what to report
Reporting is voluntary and uneven — between 71 and 86 percent of school-year rows are usable, depending on the measure. Schools that never report net tuition are smaller than those that do. Unobserved differences cannot be ruled out.
The paper behind this story
The Dual-Curriculum Premium at National Scale
Jewish Day School Financial Structure in a National NAIS PK–8 Benchmark Pool
Working paper · July 2026 · Gavriel Brown, PhD · 14 pages
Abstract is open. The full paper is available on request.
Ḥeshbon — Center on Data and Jewish Life
A data project on how Jewish life is paid for. The work comes in seasons. This page is part of Season 1 — Jewish Education. It states its own sources, sample sizes and limits.
Working prototype. Every figure comes from the underlying research. Where a chart simplifies a published result, the page says so. Nothing here audits an individual school.
