1/20
Most people only know Jaime Escalante from Stand and Deliver.
Few know there was a Chinese immigrant teacher who did something just as extraordinary:
For 20 years in the Arizona desert, he took the state’s poorest Indigenous, Latino, and Black middle schoolers — many with broken English and shattered foundations — and turned them into statewide champions.
His name is Michael Xu.
The “Sage from the East.”
A man who survived China’s Cultural Revolution, hard labor in the jungle, lifelong dyslexia, and insomnia… yet became a legendary math teacher.
This thread is the first time his full story is being told.
And it reveals something much bigger than one teacher’s success.
Most people only know Jaime Escalante from Stand and Deliver.
Few know there was a Chinese immigrant teacher who did something just as extraordinary:
For 20 years in the Arizona desert, he took the state’s poorest Indigenous, Latino, and Black middle schoolers — many with broken English and shattered foundations — and turned them into statewide champions.
His name is Michael Xu.
The “Sage from the East.”
A man who survived China’s Cultural Revolution, hard labor in the jungle, lifelong dyslexia, and insomnia… yet became a legendary math teacher.
This thread is the first time his full story is being told.
And it reveals something much bigger than one teacher’s success.
2/20
Now, fellow Chinese immigrant and award-winning author Yellow Heights is telling Mr. Xu’s full story in a powerful new bilingual Substack series:
yellowheights.substack.com/p/introducing-…
This isn’t just one teacher’s miracle.
It raises two explosive questions that cut to the heart of America’s education crisis:
1. Is Mr. Xu’s miracle a victory for progressive education — or powerful proof against it?
2. Why did his students arrive in middle school with shockingly weak math foundations?
2
Why has U.S. K-12 math failed generations of kids?
Now, fellow Chinese immigrant and award-winning author Yellow Heights is telling Mr. Xu’s full story in a powerful new bilingual Substack series:
yellowheights.substack.com/p/introducing-…
This isn’t just one teacher’s miracle.
It raises two explosive questions that cut to the heart of America’s education crisis:
1. Is Mr. Xu’s miracle a victory for progressive education — or powerful proof against it?
2. Why did his students arrive in middle school with shockingly weak math foundations?
2
Why has U.S. K-12 math failed generations of kids?
3/20
Before the miracle, face the brutal reality Mr. Xu walked into.
His first year felt like total defeat.
Chaos. No discipline. Constant rebellion.
Kids already defeated before they sat down.
Middle schoolers with arithmetic knowledge that left him stunned — full of deep misconceptions about what math even is.
yellowheights.substack.com/p/chapter-2-te…
Before the miracle, face the brutal reality Mr. Xu walked into.
His first year felt like total defeat.
Chaos. No discipline. Constant rebellion.
Kids already defeated before they sat down.
Middle schoolers with arithmetic knowledge that left him stunned — full of deep misconceptions about what math even is.
yellowheights.substack.com/p/chapter-2-te…
4/20
Mr. Xu refused to quit.
Every year, he did something radical: he ignored the textbook completely for the first two weeks.
He rebuilt his students’ broken relationship with math itself.
He diagnosed the real problem: years of bad teaching had convinced these kids that
“Math is just rote memorization.”
“Math doesn’t make sense.”
But Mr. Xu believed something truly radical:
Every child can learn math.
Poor performance is not about limited talent — it’s about bad teaching.
He set out to prove it.
yellowheights.substack.com/p/chapter-3-bu…
Mr. Xu refused to quit.
Every year, he did something radical: he ignored the textbook completely for the first two weeks.
He rebuilt his students’ broken relationship with math itself.
He diagnosed the real problem: years of bad teaching had convinced these kids that
“Math is just rote memorization.”
“Math doesn’t make sense.”
But Mr. Xu believed something truly radical:
Every child can learn math.
Poor performance is not about limited talent — it’s about bad teaching.
He set out to prove it.
yellowheights.substack.com/p/chapter-3-bu…
5/20
His first goal wasn’t just to teach math.
It was to help every child fall in love with math.
He wanted them to believe:
“I can learn math.”
“Math is fun and useful.”
“Math makes me smarter.”
While others pushed “real-world relevance” and group games, Mr. Xu showed them something deeper: the intrinsic beauty and power of mathematics — the “heavenly eye” that lets humans understand the universe.
His first goal wasn’t just to teach math.
It was to help every child fall in love with math.
He wanted them to believe:
“I can learn math.”
“Math is fun and useful.”
“Math makes me smarter.”
While others pushed “real-world relevance” and group games, Mr. Xu showed them something deeper: the intrinsic beauty and power of mathematics — the “heavenly eye” that lets humans understand the universe.
6/20
Class management is one of the biggest headaches in underperforming schools.
But Mr. Xu discovered the real root of the chaos: years of bad teaching.
He figured out something powerful:
“The noisier a student is, the stronger their curiosity often is. If you can capture their curiosity, you can capture their attention. Only then can you truly settle them down and have control of the classroom.”
Once students felt safe to be curious, the chaos disappeared.
Class management is one of the biggest headaches in underperforming schools.
But Mr. Xu discovered the real root of the chaos: years of bad teaching.
He figured out something powerful:
“The noisier a student is, the stronger their curiosity often is. If you can capture their curiosity, you can capture their attention. Only then can you truly settle them down and have control of the classroom.”
Once students felt safe to be curious, the chaos disappeared.
7/20
Then came one of his greatest inventions: the IDK Method.
Traumatized as a child in China, where saying “I don’t know” could be dangerous, he created a judgment-free zone where kids could openly admit they were lost… and then work together to figure it out.
Shy kids became confident leaders.
Strugglers became state champions.
Chaos disappeared.
Intellectual courage exploded.
yellowheights.substack.com/p/chapter-4-th…
Then came one of his greatest inventions: the IDK Method.
Traumatized as a child in China, where saying “I don’t know” could be dangerous, he created a judgment-free zone where kids could openly admit they were lost… and then work together to figure it out.
Shy kids became confident leaders.
Strugglers became state champions.
Chaos disappeared.
Intellectual courage exploded.
yellowheights.substack.com/p/chapter-4-th…
8/20
Without a rock-solid arithmetic foundation, teaching middle school math is like building a house on sand.
Mr. Xu broke arithmetic into 17 core parts and spent the first weeks diagnosing and fixing every single student’s gaps — no matter how long it took.
He refused to race ahead.
Result? 100% pass rates and state champions.
Proof that every child can master math when the teacher prioritizes real mastery over covering the curriculum.
Without a rock-solid arithmetic foundation, teaching middle school math is like building a house on sand.
Mr. Xu broke arithmetic into 17 core parts and spent the first weeks diagnosing and fixing every single student’s gaps — no matter how long it took.
He refused to race ahead.
Result? 100% pass rates and state champions.
Proof that every child can master math when the teacher prioritizes real mastery over covering the curriculum.
9/20
Mr. Xu’s secret weapon was simple: he repaired the broken foundations his middle schoolers arrived with.
Most American kids never get that chance.
Their STEM dreams are crushed in elementary school.
The big question: Why were they so far behind? What’s really happening in elementary math?
Mr. Xu and Yellow Heights saw the painful truth: many elementary teachers are trained to dismiss strong foundations as “unimportant” — or even harmful to “conceptual understanding.”
Even capable teachers are forced into deficient programs.
Hung-Hsi Wu calls this vicious circle that has plagued American math education for decades.
Mr. Xu’s secret weapon was simple: he repaired the broken foundations his middle schoolers arrived with.
Most American kids never get that chance.
Their STEM dreams are crushed in elementary school.
The big question: Why were they so far behind? What’s really happening in elementary math?
Mr. Xu and Yellow Heights saw the painful truth: many elementary teachers are trained to dismiss strong foundations as “unimportant” — or even harmful to “conceptual understanding.”
Even capable teachers are forced into deficient programs.
Hung-Hsi Wu calls this vicious circle that has plagued American math education for decades.
10/20
The problem isn’t just teachers — the textbooks are often terrible too.
Mr. Xu watched “Reform Math” textbook Connected Math destroy his students.
It was one of the most protested books of the 1990s Math Wars — condemned by over 200 mathematicians and scientists.
Yet these notorious textbooks are still widely in use today.
yellowheights.substack.com/p/chapter-5-le…
The problem isn’t just teachers — the textbooks are often terrible too.
Mr. Xu watched “Reform Math” textbook Connected Math destroy his students.
It was one of the most protested books of the 1990s Math Wars — condemned by over 200 mathematicians and scientists.
Yet these notorious textbooks are still widely in use today.
yellowheights.substack.com/p/chapter-5-le…
11/20
Incompetent teaching + terrible textbooks = perfect storm.
The disaster is now baked into the system.
In 1992, mathematician Hung-Hsi Wu felt like he was watching kids drown while standing helpless on the riverbank.
He called Reform Math a nightmare.
In 2026, he lamented: “For the last at least seven decades… the mathematics in American schools has been basically completely unlearnable.”
youtube.com/live/t7KUhlJ55…
Incompetent teaching + terrible textbooks = perfect storm.
The disaster is now baked into the system.
In 1992, mathematician Hung-Hsi Wu felt like he was watching kids drown while standing helpless on the riverbank.
He called Reform Math a nightmare.
In 2026, he lamented: “For the last at least seven decades… the mathematics in American schools has been basically completely unlearnable.”
youtube.com/live/t7KUhlJ55…
12/20
In 1992, Hung-Hsi Wu wrote:
“It enraged me to see a group of people going out of their way to dumb down the curriculum.”
The dumbing down began with the progressive pioneers in the early 20th century.
The movement they led was never an accident.
It was deliberately built on elitist roots during the 1880–1920 immigration wave.
Elites faced a dilemma: what education for the “ordinary masses”?
Their answer: Not the rigorous kind we give our own children.
In 1992, Hung-Hsi Wu wrote:
“It enraged me to see a group of people going out of their way to dumb down the curriculum.”
The dumbing down began with the progressive pioneers in the early 20th century.
The movement they led was never an accident.
It was deliberately built on elitist roots during the 1880–1920 immigration wave.
Elites faced a dilemma: what education for the “ordinary masses”?
Their answer: Not the rigorous kind we give our own children.
13/20
Progressive pioneers were brutally honest.
They declared intelligence fixed, hereditary, and unequally distributed by race and gender.
Leaders like Terman, Thorndike, and Hall called Black, Mexican, and immigrant children inherently “dull.”
They built a two-tiered system: real academics for the elite, low-rigor “practical” training for everyone else.
That racist, elitist foundation still shapes today’s progressive education.
Progressive pioneers were brutally honest.
They declared intelligence fixed, hereditary, and unequally distributed by race and gender.
Leaders like Terman, Thorndike, and Hall called Black, Mexican, and immigrant children inherently “dull.”
They built a two-tiered system: real academics for the elite, low-rigor “practical” training for everyone else.
That racist, elitist foundation still shapes today’s progressive education.
14/20
This elitist, racist vision became the official DNA of American education.
For over a century, progressive reformers’ mission has never changed: dilute Algebra, Calculus, and advanced math, and train the masses for low-skill jobs and practical living only.
Only the slogans evolve — “life-adjustment,” “relevant,” “real-world,” and now “data science.”
Today tech tycoons pour billions into “modernizing math.” Blind to Reform Math’s evil roots, they claim to advance “equity” — yet they perpetuate soft bigotry of low expectations.
The Great Dumbing Down is still running at full speed.
This elitist, racist vision became the official DNA of American education.
For over a century, progressive reformers’ mission has never changed: dilute Algebra, Calculus, and advanced math, and train the masses for low-skill jobs and practical living only.
Only the slogans evolve — “life-adjustment,” “relevant,” “real-world,” and now “data science.”
Today tech tycoons pour billions into “modernizing math.” Blind to Reform Math’s evil roots, they claim to advance “equity” — yet they perpetuate soft bigotry of low expectations.
The Great Dumbing Down is still running at full speed.
15/20
Buzzwords change, but the mission never does.
From John Dewey to Marc Tucker, and from William Heard Kilpatrick to Jo Boaler, the playbook is the same: invent new gimmicks, then dilute real mathematical learning for ordinary kids.
Their elitist and racist convictions have never disappeared: most ordinary students “don’t need” advanced math — and disadvantaged kids especially can’t master it.
Buzzwords change, but the mission never does.
From John Dewey to Marc Tucker, and from William Heard Kilpatrick to Jo Boaler, the playbook is the same: invent new gimmicks, then dilute real mathematical learning for ordinary kids.
Their elitist and racist convictions have never disappeared: most ordinary students “don’t need” advanced math — and disadvantaged kids especially can’t master it.
16/20
The damage starts early — in elementary school.
Kids waste time on scissors, drawings, and group projects instead of building real math skills.
Mr. Xu explains: “Mathematics is a deeply internal and independent thinking process. Group activities often become distractions. Once the individual mind is interrupted, it is very difficult to resume.”
The damage starts early — in elementary school.
Kids waste time on scissors, drawings, and group projects instead of building real math skills.
Mr. Xu explains: “Mathematics is a deeply internal and independent thinking process. Group activities often become distractions. Once the individual mind is interrupted, it is very difficult to resume.”
17/20
Reform Math doesn’t just fail kids — it stupefies them.
It sidelines essential skills and forces convoluted strategies that only work in special cases.
Textbooks are bloated with pictures, stories, and incoherent content.
As mathematician W. Steve Wilson said, it prepares “future shoppers, not STEM majors.”
Boasting “conceptual understanding,” it delivers nothing but rote confusion and a permanent mathematical handicap.
Reform Math doesn’t just fail kids — it stupefies them.
It sidelines essential skills and forces convoluted strategies that only work in special cases.
Textbooks are bloated with pictures, stories, and incoherent content.
As mathematician W. Steve Wilson said, it prepares “future shoppers, not STEM majors.”
Boasting “conceptual understanding,” it delivers nothing but rote confusion and a permanent mathematical handicap.
18/20
This isn’t just an American problem.
Reform Math is a global pandemic. France, Finland, Canada, New Zealand, Taiwan, South Africa and many others adopted it — and got the same disastrous results.
Britain’s former Schools Minister Sir Nick Gibb warns: “Progressive teaching destroyed our education system.” England reversed its decline by rejecting progressive ideology. telegraph.co.uk/news/2025/08/0…
The evidence is overwhelming.
This isn’t just an American problem.
Reform Math is a global pandemic. France, Finland, Canada, New Zealand, Taiwan, South Africa and many others adopted it — and got the same disastrous results.
Britain’s former Schools Minister Sir Nick Gibb warns: “Progressive teaching destroyed our education system.” England reversed its decline by rejecting progressive ideology. telegraph.co.uk/news/2025/08/0…
The evidence is overwhelming.
19/20
For decades, progressives called traditional math "elitist" and "racist."
The truth is the opposite.
Reform Math is the real soft bigotry of low expectations.
Global crises prove it dumbs down every race.
Disadvantaged students thrive with high standards — just look at Escalante, Xu, Yom, and Success Academy.
Reform Math is cognitive child abuse.
In the age of artificial intelligence, it is creating artificial stupidity.
For decades, progressives called traditional math "elitist" and "racist."
The truth is the opposite.
Reform Math is the real soft bigotry of low expectations.
Global crises prove it dumbs down every race.
Disadvantaged students thrive with high standards — just look at Escalante, Xu, Yom, and Success Academy.
Reform Math is cognitive child abuse.
In the age of artificial intelligence, it is creating artificial stupidity.
20/20
Michael Xu, now 73, feels a growing urgency — and deep pain — over the continuing decline in math performance, especially among disadvantaged students who have suffered most from Reform Math.
In retirement, he mentors math teachers in Arizona and California. Since 2024, he’s been actively mentoring at a low-income middle school in East Palo Alto, co-taught five weeks last year, and returns to teach summer school again this year.
“If any underperforming school would like to invite me, I’d be happy to come,” he says. “The more challenging the situation and the greater the need, the more motivated I am to help these children succeed.”
Contact via private message.
Thank you for reading.
New chapters of Mr. Xu’s teaching magic are being written:
yellowheights.substack.com/p/introducing-…
Michael Xu, now 73, feels a growing urgency — and deep pain — over the continuing decline in math performance, especially among disadvantaged students who have suffered most from Reform Math.
In retirement, he mentors math teachers in Arizona and California. Since 2024, he’s been actively mentoring at a low-income middle school in East Palo Alto, co-taught five weeks last year, and returns to teach summer school again this year.
“If any underperforming school would like to invite me, I’d be happy to come,” he says. “The more challenging the situation and the greater the need, the more motivated I am to help these children succeed.”
Contact via private message.
Thank you for reading.
New chapters of Mr. Xu’s teaching magic are being written:
yellowheights.substack.com/p/introducing-…
@NickGibbUK is traveling the world to meet education ministers and educators. His warning on the harm of progressive education needs to be heard:
'...until I read books like E.D. Hirsch’s The Schools We Need and Why We Don’t Have Them, which explained intellectually and with crystal clarity what progressive education was about, where it came from, and why it was so damaging.'
tes.com/magazine/analy…
educationnext.org/what-american-…
youtu.be/1uZkq2UhNx0?si…
'...until I read books like E.D. Hirsch’s The Schools We Need and Why We Don’t Have Them, which explained intellectually and with crystal clarity what progressive education was about, where it came from, and why it was so damaging.'
tes.com/magazine/analy…
educationnext.org/what-american-…
youtu.be/1uZkq2UhNx0?si…
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