It essentially boils down to whether one chooses to do damage to the system or to the student.
Christopher Emdin, For White Folks Who Teach in the Hood… and the Rest of Y’all Too, p. 206
Christopher Emdin wrote For White Folks Who Teach in the Hood… and the Rest of Y’all Too for teachers working in classrooms whose culture they do not share. His method is reality pedagogy. Its most portable tool is the cogen, short for cogenerative dialogue.
Cogens are simple conversations between the teacher and their students with a goal of co-creating/generating plans of action for improving the classroom.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 65
A cogen is a conversation about the room. Cavendish Space is how we build the room that conversation is about. One is a meeting. The other is a floor plan. Read side by side, each one supplies what the other is missing.
The line at the top of this page is one we already carry. It is the hinge of Fix Injustice, Not Kids. We say it in five words: broken systems, not broken people.
And Emdin reaches for an ancestor we already claim. In Ratchetdemic he writes in the spirit of Septima Clark — whose citizenship schools run through our Highlander and Freedom Schools crosswalks.
In the spirit of Septima Clark, the ratchetdemic educator asks, What piece of this system is doing violence to my mind, body, and spirit, and what chaos can I bring to this space so that my students do not have to undergo the same violence that I had grown accustomed to or adjusted to?
Christopher Emdin, Ratchetdemic: Reimagining Academic Success, p. 7
This is a crosswalk of convergence. It converges at the room, at the expert, and at the plan. It also pushes back in three places, because a cogen run on talk alone leaves out many of the people Cavendish Space was built for. To hold one with Cavendish Cards, go to Hold a cogen on cavendish.space.
Table of Contents
- About Cogens
- The Social Field Is the Room
- Everyone Is an Expert on the Room
- A Cogen Is a Campfire
- The Plan of Action Is a Design Brief
- Co-Construction Is Collaborative Niche Construction
- Where Cogens Ask Us to Extend Them
- What Each Brings the Other
- A Cogen in a Cavendish Space
- Read Emdin
About Cogens
Cogens, in their purest form, are structured dialogues about the inner workings of the social field participants coinhabit. A social field is any location where human beings interact under particular rules and hierarchies established by society. It is understood that any person who spends time within a certain place is an agent of that place whose actions are somewhat predetermined by the structures in place. To have a cogen about a particular social field requires the belief that everyone who will participate brings tremendous value to the dialogue, because each has a unique perspective and vantage point. Those who participate in the educational cogen are viewed as experts on their own unique relationship to the social field that is the classroom.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 66
Emdin keeps the rules short on purpose. There are three.
The rules should be given to students in the most succinct version possible:
Christopher Emdin, For White Folks Who Teach in the Hood, p. 73
- No voice is privileged over another, or, “Everybody eats, everybody speaks.”
- One person speaks at a time; or “one mic.”
- The cogen results in a plan of action for improving the classroom.
Emdin found the model in hip-hop. John Warner, reviewing the book for Inside Higher Ed, put it like this:
In the “rap cypher,” a spontaneous freestyle group jam, Emdin saw a model for engaging with and valuing the student voice. He created student “cogens,” discussion subgroups where the teacher would solicit student expertise in how to manage the class. These students become ambassadors that help translate instructor goals into the culture of the classroom. Rather than demanding compliance, he elicits cooperation.
John Warner, “The Most Important Work of Pedagogy I’ve Read in Ten Years”
Hold on to the last two sentences of that. We come back to them.
Cogens sit beside two other practices in reality pedagogy. Coteaching hands students the teacher’s role. Cosmopolitanism builds connection across difference. We come to that one below.
The Social Field Is the Room
Emdin’s social field is "any location where human beings interact under particular rules and hierarchies established by society." Everyone in it is "an agent of that place whose actions are somewhat predetermined by the structures in place."
That is the first principle of Cavendish Space, in a sociologist’s vocabulary. The place shapes what the people in it can do. So change the place.
Henry Cavendish is our proof. He could build the conditions he needed because he was wealthy. Without that room, one of the great scientists of his age might have been lost to an asylum. As our origin story puts it: "the environment made the person possible."
Emdin’s test turns that into a choice a teacher makes every day — damage the system, or damage the student. Cavendish Space picks the system every time. In the words of What is a Cavendish Space?: "You zone the room. The room does not zone anybody."
| Cogens and Reality Pedagogy | Cavendish Space |
|---|---|
| The classroom as a social field, with "rules and hierarchies established by society" | The room as the unit of change |
| Actions "somewhat predetermined by the structures in place" | Broken systems, not broken people |
| Damage the system, or damage the student | "If it’s not working, it’s not the person." |
| A dialogue about "the inner workings of the social field" | A spread as "a design brief for the environment, not a behavior report" |
Everyone Is an Expert on the Room
Those who participate in the educational cogen are viewed as experts on their own unique relationship to the social field that is the classroom.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 66
Reality pedagogy goes further. It reverses the roles.
It focuses on making the local experiences of the student visible and creating contexts where there is a role reversal of sorts that positions the student as the expert in his or her own teaching and learning, and the teacher as the learner.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 27
Lived experience is the authority. That is the L in ARLES. It is the whole basis of co-design: "the people affected by a design hold power over it — from the beginning, not at the end." Our Highlander crosswalk leans on a history titled for the same idea: the answers come from the people.
Cavendish Cards put that expertise in a person’s hands without asking for words. A person who lays the cave, buzzy, headphones "has handed you a to-do list for the room." They are the expert. They wrote the brief.
| Cogens and Reality Pedagogy | Cavendish Space |
|---|---|
| Participants as "experts on their own unique relationship to the social field" | Lived experience as authority — the L in ARLES |
| The student as expert, the teacher as learner | The person as author of the spread |
| "Everyone who will participate brings tremendous value to the dialogue" | Nothing about us without us |
A Cogen Is a Campfire
Cavendish Space has five zones. The campfire is "a small group, sharing." A cogen is a campfire.
David Thornburg, who named the first three zones, gave the campfire to the storyteller.
If the Campfire is home to the lecture, and the Watering Hole is home to the dialogue, the Cave is home to the cognitive construction of understanding of the sort described by Jean Piaget.
David Thornburg, From the Campfire to the Holodeck
A cogen keeps the campfire’s size and takes it away from the lecturer. It is a small circle with the watering hole’s spirit, where every person is learner and teacher at once. The students tell the story of the room. The teacher listens.
Our rule for the campfire holds here too: "A campfire is not a stage, and no one at it should have to perform." A cypher can be a stage. A cogen should not be.
The cogen has a rhythm we recognize. A small group meets, then goes back to the class. That is intermittent collaboration — group work punctuated by breaks to think and work by ourselves.
Even the ambassadors are familiar. Henry Cavendish reached the watering holes of science through his friend Charles Blagden, who carried Cavendish’s ideas out into the world for him. A cogen member who carries what the circle decided back to the class is doing Blagden’s job.
| Cogens | Cavendish Space |
|---|---|
| A small group of students meeting with the teacher | The campfire: "a small group, sharing" |
| The cypher: a freestyle group jam | "A campfire is not a stage" |
| The student as storyteller, the teacher as learner | Thornburg’s campfire, handed to the students |
| A cogen meets, then rejoins the class | Intermittent collaboration |
| Cogen members as ambassadors | Charles Blagden, carrying Cavendish’s ideas out |
The Plan of Action Is a Design Brief
Emdin’s third rule keeps a cogen from becoming a venting session. It "results in a plan of action for improving the classroom."
Cavendish Space ends in the same place. A spread is a design brief. Group access needs turns a pile of spreads into "one short brief for the room." Zone a room sets that brief beside what the room already has, and what is left is the to-do list.
When the to-do list is longer than an afternoon, our own method hands the choice to a cogen in everything but name:
If you still need to choose between two, ask the people who are going to be in the room. They are better placed than a tally of cards, and asking them is the whole ethic here.
Group access needs
Emdin’s first rule lines up with ours too. "No voice is privileged over another." Our group brief refuses to count anything, because "access is not a vote." Neither lets a majority outvote one person’s need. A need named once is as real as a need named twelve times.
| Cogens | Cavendish Space |
|---|---|
| "The cogen results in a plan of action for improving the classroom" | A spread as a design brief; a pile of spreads as one brief for the room |
| "No voice is privileged over another" | No counting — "access is not a vote" |
| The plan of action, carried back to the class | Zone a room: what was asked for, beside what the room has |
| The students in the room decide | "Ask the people who are going to be in the room" |
Co-Construction Is Collaborative Niche Construction
Together, the teacher and students co-construct the classroom space.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 27
That sentence is collaborative niche construction.
Positive niche construction is what educators do for students. Collaborative niche construction is what communities do together. The difference is agency — who holds it, and how many people share it.
Cavendish Space
A teacher who rearranges a room for students is doing positive niche construction. A teacher who holds a cogen and rearranges the room with them is doing collaborative niche construction. The cogen is where the agency changes hands.
We have seen this method work with Autistic students already. EcoNiches of Learning puts it in one line: "Students should be actively involved in the co-construction of their own fitting niches."
Then there is cosmopolitanism.
While cogens focus on developing plans of action for improving the classroom, and coteaching involves the expansion of the role of the student to include that of teacher, cosmopolitanism, as it is enacted in reality pedagogy, focuses on developing deep connections among students across differences such as race, ethnicity, gender, and academic ability as they work to ensure that they move collectively toward being socially, emotionally, and physically present and committed to the classroom they share.
Christopher Emdin, For White Folks Who Teach in the Hood, p. 106
Our word for a room that holds many kinds of people at once is neurological pluralism — many different bodyminds, with diverse and conflicting needs, coexisting peaceably and interdependently.
Look at Emdin’s list of differences: race, ethnicity, gender, and academic ability. Neurotype and disability are not on it. In school they usually get filed under "academic ability," which is where the deficit model files everything it does not understand. Cosmopolitanism needs those two named — as differences, never as levels.
| Reality Pedagogy | Cavendish Space |
|---|---|
| Teacher and students "co-construct the classroom space" | Collaborative niche construction |
| The cogen as the place students shape the room | "The difference is agency" |
| Cosmopolitanism: deep connections "across differences" | Neurological pluralism |
| Differences of race, ethnicity, gender, and academic ability | Neurotype and disability, named as differences, never as levels |
Where Cogens Ask Us to Extend Them
Three places. In each one, the cogen’s own logic asks for the extension.
Everybody Eats. Nobody Has to Speak.
"Everybody eats, everybody speaks." "One mic." The rules run on talk.
For many of the people Cavendish Space was built for, talk is the expensive channel. Some of us are non-speaking. Some of us lose speech when we are overloaded. Some of us need the question an hour before we can answer it. A rule that says everybody speaks can land as a demand to perform — at the one meeting that was meant to be ours.
Our relational opacity crosswalk names the mechanism. Rapid turn-taking presupposes a tempo, and that tempo is itself an access barrier.
But read Emdin’s first rule at its word: no voice is privileged over another. Spoken voice is a privilege. So the rule itself asks for more than one kind of mic.
- The mic is anything that carries a turn. A laid card. A typed line. A message on an AAC device. A note handed over afterward.
- Passing is a whole turn. you don’t have to talk is a card in our deck for a reason.
- The question comes first. Post it before the cogen meets. tell me first is the card that most often helps.
- The turn can come late. Take written contributions after the circle closes. Processing time is not absence.
Everybody eats. Everybody gets the mic. Nobody has to take it.
Our Freedom Schools crosswalk found the same edge in 1964: a liberation pedagogy that ran hot on the verbal. The extension is the same, too — multiple modalities, communication access, and a deck that is not AAC but sits beside it.
Visibility Is Offered, Never Extracted
Reality pedagogy "allows for youth to reveal how and where teaching and learning practices have wounded them." It "works toward making students wholly visible to each other and to the teacher."
That is a real gift when a student chooses it. It is a harm when a room expects it.
Cavendish Cards are face-down by default. "The turn is the consent." The deck carries a weather card called too seen, because being watched is its own load. Our relational opacity crosswalk draws on Édouard Glissant’s right to opacity — the right not to be fully rendered transparent to another.
Psychological safety comes first. A cogen should never be where a student is asked to show a wound before the room is safe enough to hold it.
The same goes for presence. Cosmopolitanism asks students to be "socially, emotionally, and physically present." Our watering hole answers that being near people "is the whole point, and joining in stays optional." parallel existence is a way of being present, too.
Cooperation Toward Whose Goals?
Go back to Warner’s last two sentences. Cogen members "help translate instructor goals into the culture of the classroom. Rather than demanding compliance, he elicits cooperation."
That is Warner’s summary, not Emdin’s rule. But it names a real risk. Cooperation toward the teacher’s goals is still the teacher’s goals. Run that way, a cogen becomes a gentler tool for managing a class, and the students in it become the teacher’s deputies.
We named the same split in EcoNiches, where a good method was also sold on "classroom management was easier." A room that fits is owed. It is not a reward for a calmer class.
Emdin’s own test settles it: damage the system, or damage the student. Our group brief turns that test into a rule anyone can hold a plan against.
No output sentence takes a person or a group as its subject.
Group access needs
Run every line of a cogen’s plan of action through it. "Students will stop calling out" makes the students the subject. That plan has chosen to change them. "This room needs a written way to join the discussion" makes the room the subject. Only one of those passes Emdin’s test.
A cogen member should carry the class’s requests to the teacher, and the room’s changes back to the class. Never the teacher’s rules into the class.
What Each Brings the Other
What Cogens Bring to Cavendish Space
- A standing practice. Cavendish Space has zones, edges, a deck, and a room tool. It says a day is designed "with the person, never at them." It has not named the recurring meeting where that happens. The cogen is that meeting.
- Race at the center. Emdin writes about whiteness, urban classrooms, and Black and Brown students by name. Our framework is named for an eighteenth-century aristocrat, and our own pages say plainly that his wealth bought him the room he needed. Cavendish Space names class. It names race far less often than it should. Neurodivergence never shows up alone. A Cavendish Space has to meet each student "on his or her own cultural and emotional turf" — not only on their sensory turf.
- The teacher’s own wounds. The ratchetdemic educator asks what the system is doing to their own "mind, body, and spirit." Cavendish Space is mostly written from the learner’s side. Teachers are bodyminds in the room too, and some of them are Autistic.
What Cavendish Space Brings to Cogens
- Words for the hard-to-say. A cogen asks students to say what the room is doing to them. Sensory and regulatory load are among the hardest things to put into words on demand. The deck has the words: buzzy, headphones, a way out.
- More than one mic. Cards, writing, AAC, and turns that arrive late.
- Something to change. Five zones, the edges between them, and lily pads to land on. A plan of action needs a floor plan, and Zone a room supplies one.
- The edges. A cogen is itself a transition — out of the class, into the circle, back again. Design is tested at the edges. Offer watch first, i need a minute, and coming back.
- The refusals. No scores. No counting. No behavior targets. Sharing stays with the person.
A Cogen in a Cavendish Space
The practical version — how to hold a cogen with Cavendish Cards — is Hold a cogen, on cavendish.space. The short version:
- Post the question before anyone meets.
- Meet at a campfire, with a cave and a way out close by.
- Lay cards face-down first. Turn up only what you choose to share.
- Everybody gets the mic. Nobody has to take it.
- Write the plan of action with the room as its subject.
- Take the plan to Zone a room. Start with the permissions — they cost nothing.
- Keep the plan in the library, and open the next cogen with what changed.
Damage the system, not the student. That is Emdin’s test, and it is ours. The cogen is how a room hears it. Cavendish Space is what the room builds next.
Read Emdin
- Christopher Emdin, For White Folks Who Teach in the Hood… and the Rest of Y’all Too: Reality Pedagogy and Urban Education. The source of cogens and reality pedagogy, and of the page numbers above.
- Christopher Emdin, Ratchetdemic: Reimagining Academic Success.
- chrisemdin.com
- John Warner, “The Most Important Work of Pedagogy I’ve Read in Ten Years”, Inside Higher Ed, March 21, 2016.