ANALYSISApril 13, 2026
Are charter schools good for American education?
Charter schools — publicly funded but quasi-independently operated schools — serve approximately 3.7 million students across more than 8,000 schools in the United States, representing about 7.6% of all public school students nationally. The sector is under renewed scrutiny in 2025 following a record $500 million federal investment, a deadlocked Supreme Court ruling on religious charter schools in Oklahoma, and congressional debate over the CHARTER Act. Research on their effectiveness remains mixed, with significant variation across school type, location, and student population.
Charter schools have been called both the best hope for kids trapped in failing districts and a slow-motion defunding of public education — after 30 years and millions of students, which side has the evidence?
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Individual mobility vs. systemic harm
C
The NBER Massachusetts data isn't an abstraction — it's 8 more percentage points of college enrollment for low-income kids who got a different option. When the strongest case against charter schools is a modest, contested segregation increase, and the strongest case for them is documented generational mobility for the students most failed by the status quo, the system that produces outcomes wins.
L
The conservative framing sets up a false binary: either expand charters or accept the status quo in traditional public schools. The liberal position is that the Massachusetts gains are achievable through adequately funded, accountable public schools — and the $500 million being directed to charter expansion in 2025 represents a choice to avoid that harder, more expensive work.
C
If traditional public schools could produce these outcomes, they would have. The communities waiting for 'adequately funded systemic reform' are not abstractions — they are families in Boston and Newark who have been promised exactly that for decades, and the charter sector has produced documented degree attainment gains in the meantime.
L
That's a real point, but 'the system failed so far' is not the same as 'this alternative scales without systemic costs' — and the burden runs both directions.
Who bears the segregation cost
C
I won't wave away the segregation data. A tenth of a percentage point increase in within-district racial segregation per percentage point of charter enrollment growth is real, even if small. But the conservative framework doesn't require every institution to produce racially proportionate outcomes as its primary metric — it requires that individuals have genuine liberty and that rules apply equally.
L
The individual liberty framing obscures something important: the students producing the mobility gains and the students absorbing the segregation costs are often drawn from the same communities. This isn't cleanly individual-versus-collective — it's a question of who within a disadvantaged community bears the cost of others' exit.
C
That reframing is sharp, but it still requires showing that the child who didn't win the lottery is better served by a less-segregated school producing worse outcomes — that claim needs empirical support, not just a structural presumption about community-level harm.
L
The empirical support is exactly what's missing from the charter literature at scale, which is precisely why expanding the sector before we have it is the wrong sequence.
Fixed-cost drain on remaining students
C
The funding 'drain' critique assumes fixed-cost rigidity is a feature rather than a bug. Districts that lose students to charters face pressure to become more efficient or more compelling — that is not a crisis, that is a market signal.
L
Calling it a 'market signal' papers over a real structural problem: buildings, special education staff, and transportation infrastructure don't scale down when students leave. The district absorbs a net fiscal loss, and the students least able to exit — students with severe disabilities, English learners — are the ones left in a school with fewer resources.
C
Districts have been absorbing declining enrollment for decades in cities like Detroit and Cleveland with no charter competition driving it — the fixed-cost problem predates charters and blaming the exit for the building's cost is analytically convenient but not causal.
L
Preexisting decline doesn't neutralize a new pressure — it means the district is already structurally fragile when charters arrive, which makes the fiscal hit worse, not irrelevant.
Accountability without federal strings
C
Albert Shanker envisioned charters as laboratories of teacher innovation, not federal programs. The CHARTER Act's proposed prohibition on for-profit management is exactly the kind of regulatory creep that should make conservatives alert — the sector is healthiest when accountability runs through parental choice and state oversight, not Washington funding conditions.
L
Invoking Shanker cuts the other way: his 1988 vision explicitly called for racially and economically integrated schools that fed innovations back into traditional public schools. The sector abandoned both mandates. If parental choice were sufficient accountability, we wouldn't need the Texas Education Agency closing a chronically underperforming San Antonio charter in 2025.
C
Texas closing that school is parental accountability working through state oversight — exactly the mechanism conservatives prefer over federal conditions. That's not a counterexample to the argument; it's the argument.
L
One closure after years of chronic underperformance, held up as evidence the system self-corrects, is a low bar to clear with public dollars.
Religious charters and public funding
C
The 4-to-4 deadlock on Oklahoma's St. Isidore Catholic Virtual School sets no binding precedent, and that case will return. If public funding can follow a child to a secular charter that teaches values and culture, the constitutional logic for excluding faith-based institutions becomes increasingly strained — the First Amendment argument is stronger than a single recusal made it appear.
L
The conservative framing calls this religious liberty, but what it describes is redirecting public dollars to institutions that can legally discriminate in hiring, admissions, and curriculum while drawing from a common fund. Every major church-state precedent since Everson v. Board of Education has distinguished neutrally available aid from direct subsidy of religious mission — a Catholic virtual school teaching doctrine is the latter.
C
Everson itself upheld public funding for busing to parochial schools, and the Court's trajectory since Zelman and Espinoza has moved consistently toward treating exclusion of religious institutions from neutral aid programs as unconstitutional discrimination, not constitutional protection.
L
Zelman covered indirect aid through parental choice — this is a school chartered by the state as a public school, which is a categorically different relationship, and that distinction is exactly what the Court left unresolved.
Conservative's hardest question
The segregation finding is genuinely difficult to dismiss because it suggests that individual mobility gains for some students may come at a systemic cost to racial integration for others — a tradeoff that conservative frameworks centered on individual liberty have no easy mechanism to resolve at the community level.
Liberal's hardest question
The Massachusetts college attainment data is genuinely difficult to argue around: a 5-percentage-point increase in degree attainment represents thousands of real people whose economic trajectories changed. If the strongest liberal counter is 'we could achieve this through well-funded traditional public schools,' that argument has the burden of explaining why it hasn't happened yet in the districts where charters are producing these results.
Both sides agree: Both sides accept the Massachusetts NBER college attainment data as genuine and consequential, meaning neither position is actually arguing that urban charter schools produce no meaningful outcomes for historically underserved students.
The real conflict: A genuine factual and structural dispute over school finance: conservatives treat per-pupil funding transfers as equitable by definition, while liberals argue fixed operating costs mean student departures produce net fiscal losses for districts — a claim that cannot be resolved by values alone and requires district-level cost accounting that neither side fully produces.
What nobody has answered: The students producing the Massachusetts mobility gains and the students absorbing the segregation and fiscal costs are often drawn from the same low-income communities of color — so who, specifically, is making the decision about which children in those communities benefit and which absorb the cost, and on what democratic basis is that allocation being made?
Sources
- Stanford University Center for Research on Educational Outcomes (CREDO) — nationwide charter school performance analysis
- National Bureau of Economic Research — Massachusetts charter school college enrollment and degree attainment study
- Harvard Kennedy School — research summary on charter school effectiveness variation
- U.S. Department of Education — 2025 announcement of $500 million charter school investment
- U.S. Supreme Court — 2025 deadlocked ruling on Oklahoma religious charter school case (St. Isidore of Seville Catholic Virtual School)
- Congressional subcommittee hearings on the CHARTER Act (2025)
- Texas Education Agency — 2025 closure of underperforming San Antonio charter school
- Nationwide study on charter school growth and racial/ethnic school segregation