Private School vs. a Better School District With Bond Yields at 20-Year Highs: A 5-Check Framework for a $307,600 Decision
Picture a family with a kindergartner and a $90,000 question. Their local public school is fine, not great. A private school nearby charges $18,500 a year. A house in a stronger district costs about $90,000 more than the one they'd otherwise buy. They've been going back and forth for months, and then this week's headlines show up.
NerdWallet reports that inflation, an AI borrowing boom and rising government debt are pushing bond yields to their highest levels in 20 years, and mortgage rates are climbing with them. The Bureau of Labor Statistics lists CPI at +0.4% for August 2026, unemployment at 4.1%, payroll growth at +162,000 (preliminary) and average hourly earnings up just $0.10. Meanwhile Mr. Money Mustache is asking whether the AI bubble will destroy our retirement, which matters because that same stock market is where you'd invest whatever you don't spend on tuition.
Here is what that does to the private-vs-house decision, and how to run it for your own situation.
Why This Week's Numbers Matter for a 13-Year Choice
A K-12 decision runs about 13 years. Three of the inputs shifted in the same direction:
- Financing the house premium got more expensive. Higher bond yields feed straight into mortgage rates, and the premium you'd finance costs more each month.
- Household cash flow is tighter. The BLS shows a $0.10 hourly wage gain in the latest month. If a full-time worker's raise looked like that for a year (a big if, since it's one month), it would be about $208 a year (0.10 × 2,080 hours). A 4% tuition increase on $18,500 is $740 in year one alone.
- The alternative use of your money is less certain. The retirement-account side of the trade is priced by a market that Mr. Money Mustache says has people wondering whether it's a bubble. I'm not making a market call. But if you'd be funding tuition by cutting retirement contributions, or funding a house by not investing a down payment, the return you assume is doing a lot of work.
None of these makes private school right or wrong. They change the size of the gap between the options, and that gap is the thing to measure.
The Baseline: What Private School Costs Over 13 Years
Worked example (my assumptions, not a quote for any school): $18,500 in year one, rising 4% a year, for 13 years (K through 12).
The sum of a growing series is 18,500 × ((1.04¹³ − 1) ÷ 0.04). 1.04¹³ is about 1.665, so the multiplier is about 16.63, and the total is about $307,600 for one child. Year 13 tuition alone is about $29,600.
Notice that the 13-year total is roughly 16.6 times the sticker price, not 13 times. That's the compounding most people skip. If you want the full formula with other cost layers, see how to calculate private school's true 13-year cost. Uniforms, fees, aftercare and fundraising come on top of that number.
The Alternative: What a $90,000 School-District Premium Costs
Here's where the mortgage-rate headline bites. For a house premium, the cost isn't the $90,000 itself. Assuming the premium holds its value and you can recover it when you sell, the real cost is the interest and property tax you pay to carry it.
Worked example: finance the full $90,000 premium on a 30-year loan, hold 13 years, property tax at 1.1% of the premium ($990 a year). I'm using two rates so you can see the sensitivity, not predicting where rates land.
| At 6.0% | At 7.0% | |
|---|---|---|
| Monthly payment on $90,000 | about $540 | about $599 |
| Total paid over 13 years | about $84,200 | about $93,400 |
| Principal paid down | about $21,100 | about $18,700 |
| Interest paid | about $63,100 | about $74,700 |
| Property tax on the premium (13 yrs) | about $12,900 | about $12,900 |
| Carrying cost (interest + tax) | about $76,000 | about $87,600 |
One percentage point of mortgage rate is worth roughly $11,600 on this premium over 13 years. That's real money, but notice its size against the tuition line. The rate move matters at the margin. It doesn't flip the comparison on its own.
This is the kind of side-by-side Zuvelanti runs for you, so you don't have to build the spreadsheet yourself.
Head-to-Head: One Child vs. Two
Now the comparison, using the 7% column and the same assumptions:
| Scenario | 13-year private tuition | House premium carrying cost | Gap (tuition minus house) |
|---|---|---|---|
| One child | about $307,600 | about $87,600 | about $220,000 |
| Two children, both enrolled the whole time | about $615,200 | about $87,600 | about $527,600 |
Two children double the tuition but not the house premium, because one house serves both kids. That's why the house-premium route gets relatively cheaper as your family grows. It's also why a household with one child and a household with three can reasonably reach opposite answers from the same starting prices.
If you want other versions of this comparison, two kids and the break-even math at 6.7% rates walks through it in more detail.
But your numbers will differ. Your premium might be $30,000 or $250,000. Your tuition might be $9,000 or $32,000. You might already own and not be moving at all, in which case the house side is a sunk cost and the question is entirely about tuition.
The 5-Check Decision Framework
Here's the order I'd work through it, and what each check can settle.
Check 1: Is the house move even on the table?
If you'd move anyway for a job, space or family, the school-district premium is partly a cost you're paying regardless. If you'd stay put, the premium isn't a real option and the comparison collapses to private tuition vs. free public school in your current zone. Start here, because it can end the analysis in one step.
Check 2: What is your real tuition trajectory, not the sticker price?
Ask the school for its tuition history over the last five years. Then run the compounding at that rate, not at a guess. Moving from 3% to 5% growth on $18,500 changes the 13-year total from about $290,000 to about $328,000 (my arithmetic on the same formula). Also ask whether siblings get discounts, and whether tuition is locked in for any stretch.
Check 3: Can your budget absorb it if wages stay flat?
The BLS wage data shows a $0.10 monthly gain. If your income grows slower than tuition, the share of your budget going to school rises every year. A useful stress test: at what income does year-13 tuition (about $29,600 in my example) still fit without touching retirement contributions? If the answer is uncomfortable, that's information, not a verdict.
For a longer version of this test, the 6-point savings-rate checklist is a good companion.
Check 4: What are you giving up in investment returns?
This is where the Mr. Money Mustache piece matters. Suppose you put $18,500 a year into investments instead of tuition (a flat contribution, to keep it simple):
- At 5% a year, 13 years grows to about $327,700.
- At 8% a year, it grows to about $397,700.
That's a $70,000 swing from the return assumption alone, larger than the entire mortgage-rate swing above. Nobody knows which return you'll get, and a stock market that some people call a bubble makes the range wide. The honest way to handle this is to model both, and to notice if your decision only works under the optimistic one. A decision that survives a 5% return is sturdier than one that needs 8%.
Check 5: What does an ESA, voucher or scholarship do to the gap?
If your state offers an education savings account or voucher, subtract it before anything else, because it can change the answer more than any rate move. Illustration only: a $7,000 annual benefit held flat for 13 years is $91,000, which would cut the one-child gap from about $220,000 to about $129,000. Eligibility, amounts and whether the money moves with rising tuition vary by state and by year, so check the current rules for your state. Also check whether it stays in force for all 13 years, or only some.
What About College Admissions?
This is the input people most want to believe in, and the one that's hardest to quantify. I'd keep it out of your base case. Treat it as upside only if you have specific evidence, such as a school's actual placement record for students like yours. If you want to see what it would take, ask a blunt question: how much would a private school need to improve your child's outcomes for $220,000 to break even? Putting a number on that tends to clarify whether the hope is realistic or just hope.
What the Coffee-Deal Economy Can and Can't Do
You'll see plenty of advice to trim small expenses. Free coffee deals, hotel-points strategies and the like are fine, but they're worth a few hundred dollars a year. A 13-year school decision is worth hundreds of thousands. Spend your analytical effort where the dollars are: tuition trajectory, house carrying cost, the return you assume, and any ESA money.
What I'd Do With This Week's Headlines
I wouldn't change my decision because of one week of bond news. I would do three things:
- Re-run the house side at today's actual quoted rate, plus one point higher and one point lower. If the decision flips inside that band, it's a close call and other factors should decide it.
- Re-run the investment side at a low return (say 4 to 5%) so the plan doesn't depend on markets staying euphoric.
- Check whether it still works if your income doesn't grow. With wage growth this thin, that's a fair scenario to plan around.
If private school still comes out ahead under those conditions, you've made a real decision and not a mood. If the house premium wins, same. And if it's close, the tiebreakers are the ones math can't settle: your child, the specific schools, your commute and how much you'd regret each path.
For related reading on how rates interact with this choice, see the private school vs. better school district comparison at rates above 7%.
Run Your Own Version
Everything above used example numbers. Yours will be different, and the answer depends on the combination: your tuition, your premium, your number of kids, your ESA eligibility and your return assumption. You can plug your real inputs into Zuvelanti and see the 13-year comparison for your situation, including how it changes when rates, wages and returns move. Either answer can be right. The point is to choose it with your own numbers in front of you.
Sources
- Will the AI Bubble Destroy our Retirement? — Mr. Money Mustache
- Major Economic Indicators Latest Numbers — Bureau of Labor Statistics
- This Tahoe Hotel Got a Glow-Up, but Missed a Few Spots — NerdWallet
- National Coffee Day: Where to Find Free Coffee and Deals on Sept. 29 — NerdWallet
- Why the Bond Market’s Struggles Are Driving Up Mortgage Rates — NerdWallet