Chris Lehmann
@clehmann.bsky.social
Founding Principal / CEO - Science Leadership Academy Schools
Co-Author of "Building School 2.0: How to Create the Schools We Need"
Dad to Jakob and Theo.
Still writes here when I can: http://practicaltheory.org
Co-Author of "Building School 2.0: How to Create the Schools We Need"
Dad to Jakob and Theo.
Still writes here when I can: http://practicaltheory.org
Pinned
Chris Lehmann
@clehmann.bsky.social
· Aug 24
20 Years of SLA
Tomorrow morning, Science Leadership Academy opens its doors for the 20th time. To say that it has been a heck of a run is purely an understatement. In that time, we've worked with thousands of kids, and we've done all that we can to show the world that an inquiry driven, project based, caring school really can make a difference in the lives of the students and the educators who inhabit it.
practicaltheory.org
New Post: 20 Years of SLA
What lessons have we learned as we open our doors for our 20th first day of school?
What lessons have we learned as we open our doors for our 20th first day of school?
God, I miss having a President who would take the time to listen to children.
I had fun reading to some Burke Elementary students at the Chicago Public Library today. When the Obama Presidential Center opens next year, we’ll have a new branch of the library for the community to enjoy.
December 10, 2025 at 1:18 AM
God, I miss having a President who would take the time to listen to children.
Refs have made some wildly questionable calls and no-calls tonight.
December 9, 2025 at 4:46 AM
Refs have made some wildly questionable calls and no-calls tonight.
AJ Brown.
Dude.
Come on, man.
Dude.
Come on, man.
December 9, 2025 at 4:13 AM
AJ Brown.
Dude.
Come on, man.
Dude.
Come on, man.
More and more, I am incredibly suspect of anyone talking about tech in education who isn't arguing for a caution, middle path.
For me, the tech is still best used to help kids create, research, network and problem-solve. But kids and teachers have to do the hard thinking, not the tech.
For me, the tech is still best used to help kids create, research, network and problem-solve. But kids and teachers have to do the hard thinking, not the tech.
December 7, 2025 at 11:48 PM
More and more, I am incredibly suspect of anyone talking about tech in education who isn't arguing for a caution, middle path.
For me, the tech is still best used to help kids create, research, network and problem-solve. But kids and teachers have to do the hard thinking, not the tech.
For me, the tech is still best used to help kids create, research, network and problem-solve. But kids and teachers have to do the hard thinking, not the tech.
Movie you’ve watched more than six times with a gif. Hard mode: no Stars (Wars nor Trek), LOTR, or Marvel, Disney Animated or Pixar.
December 7, 2025 at 11:45 PM
Movie you’ve watched more than six times with a gif. Hard mode: no Stars (Wars nor Trek), LOTR, or Marvel, Disney Animated or Pixar.
A better title - is our nation’s education policy making kids unwell?
Dear @nytimes.com - do so much better than this.
America’s Children Are Unwell. Are Schools Part of the Problem? www.nytimes.com/2025/11/24/m...
Dear @nytimes.com - do so much better than this.
America’s Children Are Unwell. Are Schools Part of the Problem? www.nytimes.com/2025/11/24/m...
America’s Children Are Unwell. Are Schools Part of the Problem?
www.nytimes.com
December 7, 2025 at 9:13 PM
A better title - is our nation’s education policy making kids unwell?
Dear @nytimes.com - do so much better than this.
America’s Children Are Unwell. Are Schools Part of the Problem? www.nytimes.com/2025/11/24/m...
Dear @nytimes.com - do so much better than this.
America’s Children Are Unwell. Are Schools Part of the Problem? www.nytimes.com/2025/11/24/m...
Reposted by Chris Lehmann
This really is a must read for anyone in academia.
December 7, 2025 at 5:12 PM
This really is a must read for anyone in academia.
“I don’t want to live in a world where the train wreck is the catalyst for taking the wise actions we need on AI.” - Tristan Harris
December 6, 2025 at 2:20 PM
“I don’t want to live in a world where the train wreck is the catalyst for taking the wise actions we need on AI.” - Tristan Harris
I cannot recommend the podcast Your Undivided Attention enough.
And educators - we REALLY need to be thinking about how much - or little - we are letting AI into our schools.
podcasts.apple.com/us/podcast/y...
And educators - we REALLY need to be thinking about how much - or little - we are letting AI into our schools.
podcasts.apple.com/us/podcast/y...
Your Undivided Attention
Technology Podcast · Updated Biweekly · Join us every other Thursday to understand how new technologies are shaping the way we live, work, and think.
Your Undivided Attention is produced by Senior P...
podcasts.apple.com
December 6, 2025 at 2:15 PM
I cannot recommend the podcast Your Undivided Attention enough.
And educators - we REALLY need to be thinking about how much - or little - we are letting AI into our schools.
podcasts.apple.com/us/podcast/y...
And educators - we REALLY need to be thinking about how much - or little - we are letting AI into our schools.
podcasts.apple.com/us/podcast/y...
This is very much a half-baked idea right now...
A huge tension we have in public schools...
For the institution, "all" is a higher goal than "each," but for parents, "each" is more important than "all."
A huge tension we have in public schools...
For the institution, "all" is a higher goal than "each," but for parents, "each" is more important than "all."
December 2, 2025 at 4:35 AM
This is very much a half-baked idea right now...
A huge tension we have in public schools...
For the institution, "all" is a higher goal than "each," but for parents, "each" is more important than "all."
A huge tension we have in public schools...
For the institution, "all" is a higher goal than "each," but for parents, "each" is more important than "all."
Reposted by Chris Lehmann
Franklin The Turtle’s publisher responds to Pete Hegseth.
December 2, 2025 at 3:01 AM
Franklin The Turtle’s publisher responds to Pete Hegseth.
Man… I feel better about my day.
Younghoe Koo completely missed the ball and kicked the turf, Jaxson Dart can't believe it
December 2, 2025 at 3:12 AM
Man… I feel better about my day.
They really just aren't hiding it.
And notice: 11 stars—the number of states in the Confederacy. “Americanism” is the new fascism, as predicted.
November 30, 2025 at 4:54 PM
They really just aren't hiding it.
And yet, he said exactly that.
GOP Rep. Don Bacon: "I don't think Secretary Hegseth would be foolish enough to make this decision to say, 'Kill everybody. Kill the survivors,' because that's a clear violation of the law of war."
November 30, 2025 at 4:39 PM
And yet, he said exactly that.
Joel Embiid makes $55.2 million - 35.7% of their payroll. He repesents 3% of the minutes on the floor this year. (48 * # of games * 5))
Paul George makes $51.6 million for 33.4% of the payroll. He represents 2% of their minutes.
That's 69.1% of #Sixers payroll playing 5% of the total minutes.
Paul George makes $51.6 million for 33.4% of the payroll. He represents 2% of their minutes.
That's 69.1% of #Sixers payroll playing 5% of the total minutes.
November 30, 2025 at 4:31 PM
Joel Embiid makes $55.2 million - 35.7% of their payroll. He repesents 3% of the minutes on the floor this year. (48 * # of games * 5))
Paul George makes $51.6 million for 33.4% of the payroll. He represents 2% of their minutes.
That's 69.1% of #Sixers payroll playing 5% of the total minutes.
Paul George makes $51.6 million for 33.4% of the payroll. He represents 2% of their minutes.
That's 69.1% of #Sixers payroll playing 5% of the total minutes.
This is going to cost Sirianni his job.
Nick Sirianni says, “We’re not changing the play caller.”
November 29, 2025 at 1:23 AM
This is going to cost Sirianni his job.
Reposted by Chris Lehmann
If you want to know why Hegseth is panicking about reminders that there is accountably for giving or carrying out illegal orders, it’s likely because he knows he has given illegal orders to murder people.
Hegseth order on first Caribbean boat strike, officials say: Kill them all
Defense Secretary Pete Hegseth issued a verbal order to kill all crew members in the Sept. 2 strike on a suspected drug boat. Navy SEALs fired a second missile.
www.washingtonpost.com
November 28, 2025 at 8:02 PM
If you want to know why Hegseth is panicking about reminders that there is accountably for giving or carrying out illegal orders, it’s likely because he knows he has given illegal orders to murder people.
Good God, Johni Broome is unplayable.
November 26, 2025 at 3:22 AM
Good God, Johni Broome is unplayable.
The Sixers are unwatchable tonight.
And yet… here I am.
I hate being a Philadelphia fan.
And yet… here I am.
I hate being a Philadelphia fan.
November 26, 2025 at 2:04 AM
The Sixers are unwatchable tonight.
And yet… here I am.
I hate being a Philadelphia fan.
And yet… here I am.
I hate being a Philadelphia fan.
I hate to say this, but if Joel Embiid cannot play 40 games a year, the Sixers need to stretch and waive him after this season.
They cannot spend $60-$70 million a year for the next three years for a part-time player.
They cannot spend $60-$70 million a year for the next three years for a part-time player.
November 26, 2025 at 1:24 AM
I hate to say this, but if Joel Embiid cannot play 40 games a year, the Sixers need to stretch and waive him after this season.
They cannot spend $60-$70 million a year for the next three years for a part-time player.
They cannot spend $60-$70 million a year for the next three years for a part-time player.
When you watch this performance, you really understand why an entire generation was so wildly in love with Stevie Nicks.
My goodness.
youtube.com/watch?v=2b9B...
My goodness.
youtube.com/watch?v=2b9B...
Fleetwood Mac - Rhiannon (live)
YouTube video by Sky Vibes
youtube.com
November 23, 2025 at 12:47 AM
When you watch this performance, you really understand why an entire generation was so wildly in love with Stevie Nicks.
My goodness.
youtube.com/watch?v=2b9B...
My goodness.
youtube.com/watch?v=2b9B...
Release everything. Arrest them all.
Thomas Massie says the FBI is sitting on information that implicates 20 other men in Epstein's child sex trafficking operation
They include a rockstar, six billionaires (including one from Canada), a high-profile government official, a very prominent banker, and a magician
They include a rockstar, six billionaires (including one from Canada), a high-profile government official, a very prominent banker, and a magician
November 23, 2025 at 12:44 AM
Release everything. Arrest them all.