Every elementary teacher knows the feeling: you glance at your gradebook or student folders and realize that many students are at wildly different places. Some are missing assignments from absences, others rushed through work without finishing, and a few students are sitting quietly waiting for the next challenge. Add assemblies, testing, field trips, and holidays into the mix, and suddenly instructional time feels fractured.
That’s where Ketchup and Mustard Day comes in.
A Ketchup Day is when students “catch up” on unfinished or missing work.
A Mustard Day is when students complete must-do assignments that everyone is expected to finish.
By giving these days playful names and a clear structure, you turn what could feel like a stressful, remedial workday into a positive, empowering classroom experience. Students feel ownership over their learning, teachers regain instructional balance, and the classroom runs smoothly.
This blog post will walk you through what Ketchup and Mustard Days are, when to use them, how to plan them, how to manage student behavior, and how to make them effective for all learners—from early elementary to upper elementary classrooms.
What Is a Ketchup and Mustard Day?
A Ketchup and Mustard Day is a structured work period built into your classroom schedule that allows students to complete unfinished tasks in an organized and supportive environment.
Ketchup Day (Catch Up on Work)
On a Ketchup Day, students:
Finish incomplete assignments
Make up missed work from absences
Revise or correct work that needs improvement
Complete assessments or practice tasks they didn’t finish
These days are especially helpful after:
Extended absences
Testing weeks
Shortened schedules
Report card deadlines
The end of a unit
Mustard Day (Must-Do Work)
On a Mustard Day, all students:
Complete required assignments that everyone needs to finish
Work on benchmark assessments, writing pieces, or projects
Practice essential skills that need reinforcement
Mustard Days ensure that every student is on the same page before moving forward with new instruction.
Some teachers combine both into one day, allowing students to work on either ketchup or mustard tasks depending on their needs.
Why Ketchup and Mustard Days Work
1. They Reduce Teacher Stress
Instead of constantly juggling make-up work during small groups or prep time, you have dedicated time built into your schedule. This prevents burnout and helps you maintain a manageable workflow.
2. They Teach Student Responsibility
Students learn to:
Track their own missing work
Prioritize tasks
Manage time independently
Take ownership of their learning
These are life skills—not just academic ones.
3. They Normalize Needing Extra Time
Rather than singling out students who are behind, Ketchup and Mustard Days send the message that everyone needs time to catch up sometimes, and that’s okay.
4. They Support Differentiation
You can meet students exactly where they are—without holding back those who are ready to move on.
When Should You Schedule a Ketchup or Mustard Day?
There is no “one right way,” but successful teachers often schedule them:
Once every 2–3 weeks
At the end of a unit
After holidays or long weekends
Before report cards
Following assessment windows
On Fridays as a reset before the next week
Some teachers label them on their classroom calendar so students expect and prepare for them.
How to Introduce Ketchup and Mustard Day to Students
Step 1: Explain the Concept Clearly
Use student-friendly language:
“Sometimes we need time to ketchup on work we didn’t finish, and sometimes we need time to complete our mustard-do assignments before moving on.”
Younger students especially enjoy the wordplay, which makes the day feel fun rather than intimidating.
Step 2: Set Clear Expectations
Explain:
What types of work are allowed
Where materials will be located
How students will ask for help
What to do when they finish all tasks
Anchor charts are incredibly helpful here.
Preparing for a Successful Ketchup and Mustard Day
1. Identify Assignments Ahead of Time
Before the day arrives:
Review your gradebook or student folders
Create a list of missing or incomplete assignments
Decide which tasks count as ketchup vs. mustard
This preparation makes the day run smoothly.
2. Create Individual Student Task Lists
Each student should know exactly what they need to work on.
Options include:
Printed checklists
Sticky notes on desks
Digital task lists (Google Classroom, Seesaw, etc.)
Individual folders with work inside
Clear direction prevents confusion and off-task behavior.
Managing Behavior and Staying Focused
Ketchup and Mustard Days work best when students understand that this is still learning time.
Establish Work Time Rules
Post and review expectations such as:
Use quiet voices
Stay in your workspace
Ask three before me (ask a peer first)
Check your task list before asking for help
Use Timers
Break the day into chunks:
20–30 minutes of focused work
Short movement or brain breaks in between
This helps students maintain stamina.
What Do Students Do When They Finish?
This is a critical part of planning.
Create a Finished Work Menu that includes:
Independent reading
Skill-building games
Writing prompts
Educational websites
Challenge math problems
Creative projects
This ensures that students who are caught up remain engaged while others continue working.
Why Every Classroom Needs Ketchup and Mustard Days
Ketchup and Mustard Days are more than just a clever classroom idea—they are a powerful instructional tool. They allow teachers to regain control of pacing, help students take ownership of their learning, and create a classroom culture where effort and responsibility matter.
By intentionally planning and implementing these days, you provide students with the time they need to succeed—without stress, guilt, or pressure.
If you haven’t tried a Ketchup and Mustard Day yet, consider scheduling one soon. You may be surprised at how much learning—and confidence—comes from simply giving students the time to ketchup and finish what must be done.
