Clarity for
every class

Analyze handwritten work and respond with feedback, practice, and reteach lessons before the school day ends.

“It disaggregates the data and sorts my students into groups, work that used to take me hours.”
TaylorELA Teacher
“I trust what it tells me. Double-checking takes 2 minutes, compared to the 2 hours it would take me to find those gaps myself.”
PaulScience Teacher
“When I pass back my students’ feedback sheets… every one of them immediately starts reading.”
CurtMath Teacher
“One student recently described their experience here this way: ‘I don’t ever leave school confused.’”
MohamadSuperintendent
“What I love most is it doesn’t just give answers… My daughter can independently check her work without cheating, and she’s genuinely learning in the process.”
GiselleParent of a 4th grader

Teachers are using Co-Teacher with

Eureka MathWondersIllustrative MathematicsAmplify CKLAOpenSciEdFlorida’s B.E.S.T. StandardsWordly WiseZearnHMHHistory Alive!enVision MathematicsFishtank LearningBluebonnet LearningEB AcademicsSadlierSummit K12

Can AI help kids learn?

That was the question on my mind last year when I reconnected with Samir, a longtime friend and veteran technology leader. To find out, we built a simple homework‑checking app and released it in November 2025.

What we saw was encouraging. While AI chatbots were making it easier for students to skip the thinking, our app was prompting kids like my 4th grader to think harder. She showed her work on paper, with more precision and more revision. And because the app was the referee, she didn’t have to wait for me to flag her mistakes. Instead, I could spend that time by her side as a coach.

Instead of shortcutting her learning, the AI was helping me support it, with less screen time and more connection.

We were onto something. So we turned to another place I know and love: schools. My 15 years of teaching and leading left me with deep respect for the work. But most days, I was barely staying afloat. Grading I couldn’t finish. Kids waiting for feedback. Teachers waiting for coaching. For many educators, this becomes the norm.

Teaching is complex, and the school day is a whirlwind with important curricula, systems, and relationships all competing for attention. It’s often hard to see the right next step, much less find time to take it.

So it meant a lot when Mohamad, a leader in Houston, told us six weeks after rolling out Co‑Teacher across his school:

“Teachers walk into small groups with a clear misconception to address, and that clarity for teachers creates clarity for kids.”

That’s what we’re after: clarity that saves educators time, helps them grow toward mastery of their craft, and challenges kids to think hard, off screen, in community with their peers and teachers. It’s a different vision from 1:1 AI tutors. But it’s the one Samir and I want for our own kids, and the one I wish I could have offered every student I’ve taught.

In schools from Miami and Houston to Boston and southern Indiana, we’re building Co‑Teacher alongside other educators who see AI’s potential but want a hand in shaping it to fit their schools. If that’s you too, join us in bringing more clarity to every classroom.

Ian

October 2026

Where we came from

Ian Bravo
Ian Bravo
CO-FOUNDER · INSTRUCTION

Teacher and founding school leader. TFA, NYC DOE, KIPP NYC, NJ, and Miami. Designed and led the launch of eight mixed-income private school campuses. Born in Austin. Based in Miami.

Samir Rayani
Samir Rayani
CO-FOUNDER · TECHNOLOGY

Engineer and designer. Co-founded Next Big Sound in 2008 and led engineering until Pandora acquired the company in 2015. Seven years as a guest lecturer at NYU Steinhardt. Born in Miami. Based in Austin.

HOW CO‑TEACHER WORKS TODAY
01

Scan handwritten
work.

Drop it in the copier or use your phone.

Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
Maya
P = 6+6+4+4
= 20 cm
4
6
Jordan
A = 8 × 3
= 24 cm²
3
8
Priya
P = 8+8+3
= 19 cm
3
8
Devon
P = 2(5+4)
= 18 cm
4
5
Sofia
P = 8+8+3+3
= 22 cm
3
8
A = 8×3 = 24
STUDENT%Q1Q2
Q3
■Maya R.
67
✓
✓
✗
●Jordan K.
33
✓
✗
✗
▲Priya S.
100
✓
✓
✓
●Devon M.
67
✓
✓
✗
■Sofia L.
67
✓
✓
✗
CLASS63867431
ACCURACY BY QUESTION5 QUESTIONS
Q2
Q1
Q3
Q4
Q5
0%75%100%
02

See class-wide trends
in minutes.

Data stays synced on your laptop and phone, so you
can use it wherever you are.

03

Share targeted
feedback & practice
right away.

Print a unique worksheet for all of your students in
one click.

Maya R.GR 4
Perimeter of L-shapes
STRENGTHS
You found the area correctly and labeled each side.
PRACTICE
1
Find the perimeter of the L-shape.
2
Count the units around the border.
Jordan T.GR 4
Multiplying fractions
STRENGTHS
Great job simplifying before you multiplied.
PRACTICE
1
Multiply 2/3 × 3/4 and simplify.
2
Explain why the product is smaller.
Aiden P.GR 4
Main idea & detail
STRENGTHS
You matched each detail to the right paragraph.
PRACTICE
1
Write the main idea in one sentence.
2
List two details that support it.
SQUARES
CIRCLES
TRIANGLES
RETEACH · CIRCLES1 / 4
Perimeter of polygons
04

Pull a small group
as your time allows.

Groups sorted by shared misconception, highest-leverage first. Lesson slides included.