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?
The Sixers don't deserve me staying up to watch them tonight. This game isn't worth being tired tomorrow.
Absolutely pathetic 3rd quarter against a team they just have to beat.
Absolutely pathetic 3rd quarter against a team they just have to beat.
February 10, 2026 at 4:46 AM
The Sixers don't deserve me staying up to watch them tonight. This game isn't worth being tired tomorrow.
Absolutely pathetic 3rd quarter against a team they just have to beat.
Absolutely pathetic 3rd quarter against a team they just have to beat.
Reposted by Chris Lehmann
I'm hardly the first person to note this, but it's enormously instructive that our President and his followers saw the message "THE ONLY THING MORE POWERFUL THAN HATE IS LOVE" and understood it, correctly, as an attack on them
February 9, 2026 at 2:11 AM
I'm hardly the first person to note this, but it's enormously instructive that our President and his followers saw the message "THE ONLY THING MORE POWERFUL THAN HATE IS LOVE" and understood it, correctly, as an attack on them
Reposted by Chris Lehmann
Unidos somos América.
February 9, 2026 at 2:16 AM
Unidos somos América.
Reposted by Chris Lehmann
Congratulations to Seattle and to everyone who didn't watch Kid Rock.
February 9, 2026 at 3:34 AM
Congratulations to Seattle and to everyone who didn't watch Kid Rock.
Reposted by Chris Lehmann
It's been said many times, many ways: the fascists thought winning an election would mean winning the culture, and the fact that hasn't happened is making them rabid.
February 9, 2026 at 3:35 AM
It's been said many times, many ways: the fascists thought winning an election would mean winning the culture, and the fact that hasn't happened is making them rabid.
Here’s the thing — if you are a Trump-supporting teacher, there is no way a Black student can feel safe in your classroom.
That was true before his most recent post, but it is undeniable now.
Period. Full stop.
That was true before his most recent post, but it is undeniable now.
Period. Full stop.
February 6, 2026 at 11:14 PM
Here’s the thing — if you are a Trump-supporting teacher, there is no way a Black student can feel safe in your classroom.
That was true before his most recent post, but it is undeniable now.
Period. Full stop.
That was true before his most recent post, but it is undeniable now.
Period. Full stop.
Obviously, what these folks are doing to people is far, far worse than this... but people who kick puppies really are pretty horrible.
TRIGGER WARNING, because here is a US Marshal from Trump‘s Gestapo Force in Memphis kicking a puppy today in the Whitehaven neighborhood and breaking its rib. They were serving a warrant and I guess BIG MAN got scared of the schnauzer.
(I didn’t take the video, the dog’s person did)
(I didn’t take the video, the dog’s person did)
February 6, 2026 at 1:15 PM
Obviously, what these folks are doing to people is far, far worse than this... but people who kick puppies really are pretty horrible.
Reposted by Chris Lehmann
If Jeff Bezos could afford to spend $75 million on the Melania movie & $500 million for a yacht to sail off to his $55 million wedding to give his wife a $5 million ring, please don't tell me he needed to fire one-third of the Washington Post staff.
Democracy dies in oligarchy.
Democracy dies in oligarchy.
February 5, 2026 at 12:16 AM
If Jeff Bezos could afford to spend $75 million on the Melania movie & $500 million for a yacht to sail off to his $55 million wedding to give his wife a $5 million ring, please don't tell me he needed to fire one-third of the Washington Post staff.
Democracy dies in oligarchy.
Democracy dies in oligarchy.
Join Ms. Clancy and me as we call the SLA Girls Basketball game vs. Benjamin Rush!
www.youtube.com/live/icYiRUo...
www.youtube.com/live/icYiRUo...
February 4, 2026 at 8:17 PM
Join Ms. Clancy and me as we call the SLA Girls Basketball game vs. Benjamin Rush!
www.youtube.com/live/icYiRUo...
www.youtube.com/live/icYiRUo...
Reposted by Chris Lehmann
The Washington Wizards trade for Anthony Davis the same day the Washington Post eliminates its sports section. It’s as if the universe is talking to the paper’s leadership.
February 4, 2026 at 6:51 PM
The Washington Wizards trade for Anthony Davis the same day the Washington Post eliminates its sports section. It’s as if the universe is talking to the paper’s leadership.
I hate rooting for laundry.
I hope he torches us for 30.
BREAKING: The Philadelphia 76ers are trading guard Jared McCain to the Oklahoma City Thunder for a 2026 Rockets first-round pick and three second-round picks, sources tell ESPN.
I hope he torches us for 30.
BREAKING: The Philadelphia 76ers are trading guard Jared McCain to the Oklahoma City Thunder for a 2026 Rockets first-round pick and three second-round picks, sources tell ESPN.
February 4, 2026 at 7:00 PM
I hate rooting for laundry.
I hope he torches us for 30.
BREAKING: The Philadelphia 76ers are trading guard Jared McCain to the Oklahoma City Thunder for a 2026 Rockets first-round pick and three second-round picks, sources tell ESPN.
I hope he torches us for 30.
BREAKING: The Philadelphia 76ers are trading guard Jared McCain to the Oklahoma City Thunder for a 2026 Rockets first-round pick and three second-round picks, sources tell ESPN.
The cruelty, as ever, is the point.
Reporter: Do you plan to apologize to the family of Alex Pretti?
Vance: For what?
Vance: For what?
February 4, 2026 at 5:48 PM
The cruelty, as ever, is the point.
Reposted by Chris Lehmann
One of my goals at #Educon was to get remember to take pictures with people and I did a terrible job. That said, I’m glad I remembered when @clehmann.bsky.social and @mattrkay.bsky.social. I am grateful for a snow day tomorrow for the time to sit with my learning from this amazing weekend.
February 1, 2026 at 10:32 PM
One of my goals at #Educon was to get remember to take pictures with people and I did a terrible job. That said, I’m glad I remembered when @clehmann.bsky.social and @mattrkay.bsky.social. I am grateful for a snow day tomorrow for the time to sit with my learning from this amazing weekend.
Reposted by Chris Lehmann
"Above all else, I think we have an obligation to keep our students safe. So what can that look like?"
Chris Lehmann: practicaltheory.org/blog/2026/01... @clehmann.bsky.social
Chris Lehmann: practicaltheory.org/blog/2026/01... @clehmann.bsky.social
Keep the Kids Safe
I don’t think there is a simple right answer to how to teach in this moment. The context that people are teaching in varies wildly school to school, and certainly teachers are under incredibl…
practicaltheory.org
February 1, 2026 at 4:39 PM
"Above all else, I think we have an obligation to keep our students safe. So what can that look like?"
Chris Lehmann: practicaltheory.org/blog/2026/01... @clehmann.bsky.social
Chris Lehmann: practicaltheory.org/blog/2026/01... @clehmann.bsky.social
He’s not even hiding the grift.
Trump on his multiple suits against the federal government: "I'm supposed to work out a settlement with myself ... We could make it a substantial amount, nobody would care, because it's gonna go to numerous, very good charities."
February 1, 2026 at 3:35 AM
He’s not even hiding the grift.
So… if you didn’t have “Arresting Journalists” on your “Dismantling American Democracy” bingo card, you clearly weren’t paying attention in History class.
Federal agents arrested the former CNN anchor Don Lemon on Thursday on charges that he violated federal law during a Jan. 18 protest against the Trump administration’s immigration crackdown, his lawyer said. The case had been rejected last week by a magistrate judge. www.nytimes.com/2026/01/30/u...
January 30, 2026 at 7:08 PM
So… if you didn’t have “Arresting Journalists” on your “Dismantling American Democracy” bingo card, you clearly weren’t paying attention in History class.
Reposted by Chris Lehmann
On our way to #Educon as a family! Psyched to see @clehmann.bsky.social, @dlaufenberg.bsky.social, @mattrkay.bsky.social, and everyone else! Seriously, y’all, I need time and communion with these folks right now.
January 30, 2026 at 6:33 PM
On our way to #Educon as a family! Psyched to see @clehmann.bsky.social, @dlaufenberg.bsky.social, @mattrkay.bsky.social, and everyone else! Seriously, y’all, I need time and communion with these folks right now.
If the Sixers trade VJ, et al, for Giannis and my mental health becomes dependent on the health of ANOTHER talented but increasingly fragile 30-something superstar, it will not be good for everyone. #Sixers
January 29, 2026 at 7:11 PM
If the Sixers trade VJ, et al, for Giannis and my mental health becomes dependent on the health of ANOTHER talented but increasingly fragile 30-something superstar, it will not be good for everyone. #Sixers
Reposted by Chris Lehmann
If Democrats haven't announced their proposal for the Donald Trump No Guns in Public bill by the end of the day, they're missing an easy shot
Trump: "With that being said, you can't have guns. You can't walk in with guns. You just can't. You can't walk in with guns. You can't do that. But it's just a very unfortunate incident."
January 27, 2026 at 6:06 PM
If Democrats haven't announced their proposal for the Donald Trump No Guns in Public bill by the end of the day, they're missing an easy shot
In case you missed it...
I don't know the right answer of how to teach in this moment. But I do know that - above all else - we have to do all we can to keep the kids safe.
Keep the Kids Safe
I don't think there is a simple right answer to how to teach in this moment. The context that people are teaching in varies wildly school to school, and certainly teachers are under incredible scrutiny right now with folks who are watching very carefully what they are teaching. I think we have to be aware of that and recognize that how we talk about what is going on in this country right now with our students is incredibly high stakes for many people.
practicaltheory.org
January 27, 2026 at 5:10 PM
In case you missed it...
Reposted by Chris Lehmann
The killing of Alex Pretti and the grotesque lying was an overreach by the administration. They've paid a price and had to pull back a bit. But it's when there's some disarray that the democratic opposition needs to intensify the offensive, and turn a marginal tactical success into a major victory.
January 26, 2026 at 10:56 PM
The killing of Alex Pretti and the grotesque lying was an overreach by the administration. They've paid a price and had to pull back a bit. But it's when there's some disarray that the democratic opposition needs to intensify the offensive, and turn a marginal tactical success into a major victory.
This is right.
Do not be fooled by Trump looking to placate moderates by removing Bovino and momentarily toning down the rhetoric.
They have shown us who they are over and over again.
Believe your eyes, and keep resisting.
Do not be fooled by Trump looking to placate moderates by removing Bovino and momentarily toning down the rhetoric.
They have shown us who they are over and over again.
Believe your eyes, and keep resisting.
They are wounded and flailing. Press the advantage.
January 27, 2026 at 12:23 AM
This is right.
Do not be fooled by Trump looking to placate moderates by removing Bovino and momentarily toning down the rhetoric.
They have shown us who they are over and over again.
Believe your eyes, and keep resisting.
Do not be fooled by Trump looking to placate moderates by removing Bovino and momentarily toning down the rhetoric.
They have shown us who they are over and over again.
Believe your eyes, and keep resisting.
Reposted by Chris Lehmann
Nothing says Gestapo quite like threatening people for saying “Gestapo.”
Fight the Gestapo 👉 www.PAXIS.app
Fight the Gestapo 👉 www.PAXIS.app
January 27, 2026 at 12:17 AM
Nothing says Gestapo quite like threatening people for saying “Gestapo.”
Fight the Gestapo 👉 www.PAXIS.app
Fight the Gestapo 👉 www.PAXIS.app