The National Median Is Lying to Your Board: Run a Local Enrollment Audit for Fall 2026

To give your board a credible fall 2026 enrollment target, stop starting with the NAIS median and start with your own catchment. Run a four-layer local audit: local demand (how many school-age families exist inside your drive radius and where that number is heading), capture (what share of them you actually convert through inquiry, tour, and enroll), competition (who else is fighting for the same families and at what price), and retention (how many current families you keep). Build the target from those four numbers, and every figure will trace back to a source you can defend in the budget meeting.

The national median is a national number applied to a local problem. Enrollment is won or lost inside a 15-minute drive, not in an aggregate benchmark that blends a booming Sun Belt K-8 with a shrinking Northeast boarding school. When you tell your board "the median is up ~5%, so we should be up 5%," you've imported someone else's demographics, someone else's competitors, and someone else's funnel. That's not a target. That's a guess wearing a suit.

Here's the audit, layer by layer, plus how to package it so it survives scrutiny.

Why does the NAIS median hide whether my school is growing or collapsing?

A median tells you the middle school in a distribution. It tells you nothing about the spread. Independent-school enrollment is bimodal: some schools are adding sections while others are quietly cutting grades. Averaging them produces a number that describes no real school, including yours.

NAIS data show independent school enrollment grew 3.1% overall between 2018-2019 and 2022-2023, but the spread was wide, with 36% of schools reporting declines and 14% losing 10% or more of their enrollment (NAIS, 2023).

The fix is to stop benchmarking against the sector and start benchmarking against your own last three years. If your inquiries are flat but your tour-to-enroll rate slipped, a "5% growth" target is fantasy. If your funnel is healthy and your catchment is growing, 5% might be leaving money on the table. You can't know until you decompose it, which is the whole argument in the private school growth gap.

What local demand data actually predicts my applicant pool?

Start with the count of school-age children inside your realistic drive radius, not your county, not your metro. Pull it from the Census and your state's school-age population projections, then trend it over the next three to five years.

The question isn't just "how many kids are there." It's "how many are in your income and values band, and is that number growing or shrinking?" A district can have flat total population while the specific segment that buys private education grows or evaporates.

The National Center for Education Statistics projects public school enrollment to fall about 6 percent nationally from fall 2020 to fall 2030, with enrollment expected to be lower in 2030 than in 2020 across all four regions, the Northeast, Midwest, South, and West NCES, 2024.

Combine the demographic trend with your own top-of-funnel: three years of inquiry volume by grade and by source. If demographics are flat but inquiries are falling, you have a visibility or reputation problem, not a demand problem. Those get fixed differently.

How do I measure my capture rate against real families in my catchment?

Capture rate is the share of your addressable local families you actually enroll. You approximate it by walking your funnel: inquiries, tours, applications, enrolled. Pull three years of each from your CRM and compute the conversion at every step.

Then find the leak. Most thin admissions teams have a healthy inquiry count and a broken middle: inquiries that never book a tour, tours that never apply, admits that melt over the summer. The exact math for this is in the enrollment conversion math, and it's usually where the fastest gains hide.

Among NAIS member schools, the newly enrolled to acceptances rate, the share of accepted students who enroll, is 71.4% (NAIS Facts at a Glance, 2024-2025).

This matters for the target because a capture-rate gain is something you can commit to. "We'll move tour-to-enroll from 40% to 48% by tightening follow-up" is a defensible line. "We'll grow 5% because the median did" is not.

How should retention and re-enrollment leaks factor into a growth target?

New enrollment is the number boards love to watch and the number that lies most. If you enroll 40 new students and lose 45 to attrition, you shrank while celebrating. Your target must be net: new plus retained minus attrition.

Map re-enrollment by grade, and pay special attention to transition points (the jump from lower to middle, middle to upper) where families reconsider. Those grade seams are where quiet attrition compounds.

Independent-school attrition varies sharply by division, with a median of 10.3% in elementary/middle schools, 6.8% in middle/upper schools, and 3.8% in upper schools, according to NAIS Trendbook data (NAIS 2019-2020 Trendbook, via EMA, 2020).

The economics here are lopsided in retention's favor, which is the case laid out in why retention math beats acquisition. Before you promise the board a bigger new class, prove you're keeping the one you have.

How do I present a target that survives budget-planning scrutiny?

A defensible target is one where the board debates your assumptions, not your competence. That happens when every number is tied to an audited input and a named assumption, laid out so a skeptical trustee can trace it.

Structure it like this:

• Local demand: "School-age families in our radius are flat/up X% (source: Census projection)."
• Capture: "Our tour-to-enroll ran 40% for three years. We assume 46% next year based on a specific follow-up change."
• Retention: "We retained 88% last year; we're modeling 90% after addressing the 6th-grade seam."
• Net target: the arithmetic that falls out of the three above.

When a trustee pushes back, they're now arguing about whether 46% capture is realistic, which is a productive conversation. Compare that to defending a number you borrowed from a national median: you have nothing to point at, and the whole plan wobbles.

Name your assumptions out loud. "This target assumes we don't lose our two biggest feeder families and that the new competitor down the road doesn't undercut us on tuition." Stated assumptions build trust. Hidden ones get discovered mid-year and torch your credibility.

The takeaway

The median is fine for a sector report and useless for your budget. Build your fall 2026 number from four local inputs you can audit: demand in your radius, your real capture rate, the competitors actually taking your families, and the retention you're protecting. A target built that way isn't just more accurate. It's harder to argue with, which is what you need when the board is deciding whether to fund it.

If you want a second set of eyes on your local audit before you take a number to the board, book a discovery call.