Co-Teaching Lesson Planning: How to Actually Split the Work (and the Classroom)

Co-teaching is one of the most widely implemented and most inconsistently executed models in education. Done well, two teachers in a room nearly doubles the instructional capacity for every student. Done poorly, you have one teacher teaching and one teacher circulating — which is just an expensive substitute arrangement.

The difference almost always comes down to planning.

The Six Co-Teaching Models and When to Use Each

Susan and Richard Villa's six co-teaching models give you a framework for planning. Each model has different uses, different planning requirements, and different effectiveness contexts.

One Teach, One Observe: One teacher leads instruction while the other collects observational data on student behavior, participation, or misconceptions. Most useful at the start of a unit to inform future instruction. Requires agreement in advance on what is being observed and how data is recorded.

One Teach, One Assist: One teacher leads; the other supports individual students. This is the most common model and the easiest to default to — and often the least equitable, because the special education teacher almost always ends up as the assistant.

Station Teaching: Students rotate through stations while each teacher runs one and a third operates independently. Requires significant upfront planning but allows both teachers to teach to smaller, more focused groups.

Parallel Teaching: Both teachers teach the same content to half the class simultaneously. Reduces group size, increases participation, and requires both teachers to plan the same lesson.

Alternative Teaching: One teacher works with a small group while the other works with the larger class. Best for pre-teaching, reteaching, or enrichment — not as a default structure.

Team Teaching: Both teachers co-deliver instruction simultaneously. Requires the highest level of planning and relationship, but produces the most integrated co-teaching experience.

Your co-planning should identify which model you're using for each lesson segment — not just for the full period.

Dividing Planning Responsibilities Equitably

The most common co-teaching problem is that one teacher does all the planning and the other teacher shows up. This produces what researchers call "pilot and co-pilot" dynamics — the general education teacher leads everything and the special education teacher assists.

Equitable co-planning requires:

• Shared ownership of lesson objectives (both teachers contribute to what students need to know and do)
• Divided responsibility for planning specific segments (one teacher plans the warm-up and anchor, the other plans the practice activity)
• Joint decision-making on student grouping and differentiation
• Explicit agreement on who talks when during instruction

A practical structure: meet 30 minutes weekly. The first 10 minutes, review student data. The next 15, plan the week's lessons with explicit role assignments. The last 5, debrief last week — what worked, what didn't.

If your "co-planning" is one teacher texting the other their Google Doc, you're not co-planning. You're sharing a document.

IEP Goals Live in the Lesson Plan

In co-taught classrooms, the special education teacher's primary responsibility is ensuring that students with IEPs access the curriculum and make progress toward their goals. This can't happen if the IEP goals aren't in the lesson plan.

Before planning each unit, review the IEP goals for each student with a disability in the classroom. Identify where in the unit those goals can be naturally embedded. Write those connection points into the lesson plan.

Example: a student with a goal around written expression has a natural entry point in any lesson with a writing component. A student with a goal around math reasoning can work on that goal in any problem-solving phase. The lesson doesn't need to stop to address IEP goals — they need to be woven into what everyone is doing.

Managing the Relationship Between Two Teachers

Co-teaching fails most often because of interpersonal dynamics, not instructional ones. Two teachers with different philosophies, different standards, and no time to communicate produce incoherent classroom environments.

Planning-level fixes:

• Write down the behavior management approach before the unit starts (how will behavior be handled? who addresses it first? how are consequences applied consistently?)
• Establish norms for disagreement in front of students (neither teacher overrules the other in real-time)
• Schedule reflection time — not just planning time. "What did we do well? What do we each need to improve?" is a different conversation than "what are we teaching next week?"

The best co-taught classrooms look like two teachers who think similarly because they've worked together long enough to develop shared language and shared judgment. That takes time — but it also takes intentional planning conversations rather than just dividing tasks.

The Most Underused Co-Teaching Structure: Parallel Teaching

Parallel teaching cuts class size in half while keeping both teachers doing high-quality instruction. It's more demanding to plan — both teachers need to teach the same content with the same rigor — but the results in student participation are significant.

For parallel teaching to work:

• Both teachers must plan from the same objectives and success criteria
• Student grouping must be deliberate (not just split the class alphabetically)
• Both teachers must use the same vocabulary and examples (or explicitly bridge if they differ)

The planning investment is real. But a class of 15 where every student participates beats a class of 30 every time.

Co-teaching is only as good as co-planning. Schedule the time, divide the work, and build IEP goals into the lesson — and the two-teacher model stops being an administrative arrangement and starts being an instructional advantage.