{{ summaryHeading }}
{{ seatedCount }} / {{ usableSeatCount }} seated
{{ chart_title || 'Untitled seating chart' }}
{{ layoutBadge }} {{ placementBadge }} {{ openSeatCount }} open {{ unassignedStudents.length }} unassigned Seed {{ seedDisplay }} {{ auditBadge }}
Include class, period, or date, for example Grade 5A - Monday seating.
Use one name per line, or CSV columns ID, Name, Group; drop one CSV/TXT file.
Drop a CSV or TXT seating roster here.
Choose Rows and columns for individual desks, or Table groups for shared tables.
Enter 1-12 rows and columns; usable seats drop when Advanced empty seats are set.
rows columns
Enter 1-16 tables and 1-12 seats per table.
tables seats each
Use seeded modes for repeatable shuffles; group-balanced needs Group CSV values.
Use a period/week label, for example period-1-week-3; Randomize changes the version.
One per line, for example A1 = Amina Rahman or T2S3 = Daniel Kim.
Separate labels with commas or line breaks; examples: A4, C2, T3S1.
Use a clear landmark, for example Whiteboard / teacher desk.
Auto detects commas; choose CSV for ID, Name, Group rows.
Use suffixes when two students share a name; use Keep first only to dedupe.
Compact shows A1/T2S3; Descriptive spells out row/table seat labels.
Choose group/source for quick charts, or ID and group for detailed ledgers.
{{ header }} Copy
{{ row.label }} {{ displaySeatLabel(cell.seat) }} {{ cell.studentName || cell.seat.statusLabel }} {{ cell.meta }}
Seat Student Status Source Copy
{{ row.seat }} {{ row.student }} {{ row.status }} {{ row.source }}
Check Status Detail Copy
{{ row.check }} {{ row.status }} {{ row.detail }} 

                

            

        

    

                

                

                    

                        

                            Tags: Education, Randomness
                        

                        

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A classroom seating chart turns a room arrangement into a usable plan: who sits where, which seats stay open, and how a substitute or co-teacher can read the room without guessing. The chart matters because seating affects visibility, movement, peer interaction, and how quickly a class settles into the task in front of it.

    
Rows and table groups serve different teaching moments. Rows usually make board focus and independent work easier to manage. Table groups help conversation, shared materials, and cooperative work, but they can also put high-energy pairs closer together. A useful seating plan starts with the room purpose, then checks the people in the seats.

    
Capacity is only the arithmetic part. A 4 by 5 room has 20 physical seats, yet one missing desk, aisle space, aide chair, wheelchair access area, or planned late-add seat can reduce the usable count. A plan that ignores those reserved spaces may look complete while still failing in the actual classroom.

    
Names and groups add another concern. A roster may include duplicate names, advisory groups, reading groups, table teams, or notes that help distribute students across the room. Those labels are helpful for planning, but they also make the chart more sensitive. Treat exported plans and copied data as student information and share only what the classroom handoff actually needs.

    
A balanced-looking chart does not prove that every accommodation, friendship concern, behavior plan, or sightline issue has been handled. It gives a repeatable seating draft that still needs teacher judgment, especially when individual support needs or school privacy rules are involved.

  






  

    
Technical Details:

    
A seating plan has three separate jobs. First, it defines the seat map. Second, it turns a roster into ordered students. Third, it applies placement rules so fixed seats, empty seats, overflow students, and audit notes are visible instead of being hidden inside the chart.

    
Seat labels are part of the plan's data model, not just decoration. In a row-and-column room, labels run from the front row downward as A1, A2, B1, and so on. In a table room, labels use table and seat positions such as T2S3. Those labels let a fixed assignment or an empty-seat instruction point to a precise place.

    
Roster order also changes the result. A plain list keeps the pasted order. A CSV roster can carry ID, Name, and Group columns, which gives the placement more context and gives exports clearer detail lines. Alphabetical placement sorts by student name, seeded random placement shuffles repeatably, and group-balanced placement uses the group labels to reduce same-group clustering after the seeded shuffle.


    

      Rows, table groups, fixed seats, and empty seats in a seating chart plan
      
The same roster can fill a row grid or grouped tables. Fixed and empty seats are resolved before the remaining students are placed.

    


    
Rule Core

    

      

        
        
          

            Stage
            What happens
            Boundary to check
          

        
        
          

            Build seats
            The chosen room type creates either row labels such as A1 or table labels such as T2S3.
            Rows and columns are capped at 12 each. Tables are capped at 16, with up to 12 seats per table.
          

          

            Parse roster
            Plain text becomes one student per line. CSV rows can add ID and Group detail.
            A first row of ID, Name, Group is treated as a header and skipped.
          

          

            Reserve seats
            Empty-seat labels are matched and removed from the usable count.
            Unknown seat labels create audit notes. At least one usable seat must remain.
          

          

            Apply fixed seats
            Fixed assignments place named students before any shuffle or automatic fill.
            Conflicting, missing, duplicate, or empty-seat fixed assignments are reported as notes.
          

          

            Order remaining students
            The remaining roster follows roster order, alphabetical order, seeded random order, or group-balanced shuffle.
            Seeded modes repeat only when the roster, seed, layout, empty seats, and fixed seats match.
          

          

            Fill and report
            Open usable seats fill from the ordered roster until seats or students run out.
            Extra students move to the unassigned list, and open seats remain visible in the plan.
          

        
      

    


    

      

        
        
          

            Area
            Includes
            Why it matters
          

        
        
          

            Roster
            Plain names or CSV rows with optional ID and Group values
            Controls who can be seated and what supporting detail appears in exports.
          

          

            Layout
            Rows and columns, or table count and seats per table
            Sets the seat labels, usable capacity, and visual shape of the plan.
          

          

            Placement
            Roster order, alphabetical, seeded random, or group-balanced shuffle
            Changes the fill order after fixed seats have already been honored.
          

          

            Advanced controls
            Fixed seats, empty seats, front label, roster format, duplicate policy, seat labels, and seat details
            Handles real-room exceptions and makes printed plans easier to read.
          

          

            Results
            Room Seating Plan, Seat Assignment Ledger, Placement Quality Audit, and JSON
            Shows the visual plan, seat-by-seat assignment, warnings, and structured data snapshot.
          

        
      

    

  






  

    
Everyday Use & Decision Guide:

    
Begin with the room shape you actually use most days. Choose Rows and columns for individual desks facing a front area, or Table groups when students work around shared surfaces. Add the Front label early so printed plans orient substitutes and students before they read any names.

    
For a first draft, paste one name per line and use Roster order or Alphabetical. Move to Seeded random when you want a new arrangement that can be reproduced later. Use Group-balanced shuffle only when your CSV includes meaningful group labels, such as table teams, support groups, or color groups.

    
    
      
  • Pin known placements with Fixed seats before you rely on any shuffle. A seat such as A1 or T2S3 can stay assigned while the rest of the roster moves.
    • 
      
  • Mark aisles, missing desks, aide space, wheelchair access, or reserved late-add spots in Empty seats. Those seats are removed from usable capacity rather than filled accidentally.
    • 
      
  • Use Keep with number suffix when duplicate names make printouts unclear. If one duplicate student must be pinned, make the roster names unique before entering the fixed seat.
    • 
      
  • Check the badges after each change. Seated, open, unassigned, seed, and audit status tell you whether the plan is ready or still needs review.
    • 
    

    
Do not treat the Clean audit badge as proof that the social plan is right. It means the generator did not find mechanical problems such as overflow, unknown seats, duplicate-name ambiguity, or fixed-seat conflicts. Read the chart against real classroom needs before printing or sharing it.

  






  

    
Step-by-Step Guide:

    
A reliable seating chart usually comes from building capacity first, then adding exceptions, then checking the audit.

    
    
      
  1. Enter a clear Chart title, then paste the Roster. Use one name per line for a simple plan, or CSV rows like ID, Name, Group when you want group-balanced placement or more detail in the ledger.
    2. 
      
  2. Choose Layout type. For rows, set the row and column count and confirm the layout badge shows the expected size. For tables, set table count and seats per table and confirm the table badge.
    3. 
      
  3. Pick Placement mode. If you choose a seeded mode, enter a memorable Seed or press Randomize. The seed badge should appear in the summary.
    4. 
      
  4. Open Advanced and add Fixed seats with one assignment per line, such as A1 = Amina Rahman or T2S3 = Daniel Kim. Add Empty seats for labels that must stay open.
    5. 
      
  5. Set Roster format and Duplicate names. If the audit mentions duplicate names, switch to numbered suffixes for clearer printouts or make the source names more specific.
    6. 
      
  6. Read Room Seating Plan first. Check the front label, fixed seats, empty seats, open seats, and any unassigned names before using the plan with students.
    7. 
      
  7. Open Seat Assignment Ledger when you need a row-by-row handoff, and open Placement Quality Audit when a warning badge appears.
    8. 
      
  8. If validation says to paste at least one roster name, choose a usable layout, or leave at least one usable seat, fix those inputs before trusting the plan or exporting it.
    9. 
    

  






  

    
Interpreting Results:

    
The most important number is seated / usable seats. If it says 18 / 19 seated, the room has one usable open seat after empty seats and fixed seats are handled. If unassigned is greater than zero, the roster exceeds usable capacity and the chart needs an overflow decision before it can be used.

    
Room Seating Plan is the main classroom view. Fixed seats, filled seats, empty seats, and open seats have different statuses, so read the status labels instead of scanning names alone. Seat Assignment Ledger is better for checking one student's exact seat or handing a list to another adult.

    
Placement Quality Audit explains why the summary badge says the chart has notes. Common notes include skipped roster rows, unknown empty seats, fixed seats that do not exist in the current layout, duplicate names, and students who exceeded usable seats.

    

      

        
        
          

            Result signal
            Meaning
            What to check
          

        
        
          

            Clean audit
            No mechanical placement notes were generated.
            Still review accommodations, sightlines, and peer concerns outside the chart.
          

          

            Ready with notes
            The plan exists, but at least one warning or roster note needs review.
            Open Placement Quality Audit and read each detail row.
          

          

            Overflow review
            At least one student could not be seated.
            Add usable seats, remove roster rows, or prepare a separate placement plan.
          

          

            Open seats
            Usable seats remain after all roster students are placed.
            Confirm the open seats are intentional and not caused by a skipped roster line.
          

        
      

    

    
A repeatable seed makes a shuffle reproducible, not objectively fair for every classroom purpose. If the arrangement looks wrong for behavior, support, or visibility, change the seed, switch placement mode, or pin a few seats and generate again.

  






  

    
Worked Examples:

    
    
      
  1. 
        Elementary room with one reserved desk
        
    A teacher pastes an 18-student CSV roster with group labels, chooses Rows and columns, sets 4 rows by 5 columns, marks D5 as an empty seat, and pins A1 = Amina Rahman and B2 = Daniel Kim. With Group-balanced shuffle and seed period-1-week-3, the room has 19 usable seats.
    
        
    The summary should show 18 / 19 seated, one open seat, zero unassigned students, and a seed badge. The Room Seating Plan confirms the two fixed seats and the reserved empty desk before the teacher exports the plan.
    
      
    2. 
      
  2. 
        Club meeting with more students than chairs
        
    A sponsor pastes 26 names, chooses Table groups, sets 5 tables with 4 seats each, and marks T5S4 empty for supplies. That leaves 19 usable seats. With Seeded random, the generator fills 19 seats and leaves 7 names in the unassigned list.
    
        
    The summary should move to overflow review. The right follow-up is not to print the chart as final. The sponsor needs more chairs, a split group, or a shorter active roster before using the seating plan.
    
      
    3. 
      
  3. 
        Duplicate-name warning during fixed placement
        
    A roster contains two students named Sam Lee, and Fixed seats includes A3 = Sam Lee. With the duplicate policy set to Keep and flag, the audit warns that duplicate names are present and fixed-seat matching may be ambiguous.
    
        
    The cleaner fix is to make the displayed names unique in the roster before pinning one student, such as Sam Lee - Period 1 and Sam Lee - Period 2, or use the suffix policy when the goal is only to make the printout readable.
    
      
    4. 
    

  






  

    
FAQ:

    

      Can I paste a spreadsheet roster?
      
Yes. Paste CSV text with ID, Name, and Group columns, or upload a CSV or TXT roster. The auto-detect mode treats comma-separated rows as CSV and plain lines as student names.

    

    

      Why use a seed?
      
A seed makes seeded random and group-balanced arrangements repeatable. Use the same seed with the same roster, layout, fixed seats, and empty seats when you want to recreate the same chart later.

    

    

      What happens when there are more students than seats?
      
The generator fills usable seats first, then lists the remaining students as unassigned. The summary changes to an overflow review state so the shortage is hard to miss.

    

    

      Does group-balanced shuffle understand student relationships?
      
No. It uses only the Group values in the roster to spread listed groups across the fill order. It does not know friendships, conflicts, accommodations, or behavior plans unless you represent those decisions through fixed seats or roster grouping.

    

    

      Does the roster get sent to a server?
      
The roster is parsed in the browser, and there is no tool-specific server lookup for student names, groups, or seat assignments. Treat copied CSV, DOCX, JSON, printed charts, and shared devices with the same care you would use for any student list.

    

  






  

    
Glossary:

    

      
Usable seat

      
A seat that exists in the chosen layout and has not been marked empty.

      
Fixed seat

      
A seat assigned to a named student before the remaining roster is placed.

      
Empty seat

      
A seat reserved for space, access, supplies, or another classroom reason and excluded from automatic placement.

      
Seeded random

      
A repeatable shuffle controlled by the seed text and current seating inputs.

      
Group-balanced shuffle

      
A seeded arrangement that uses roster group labels to reduce consecutive same-group placements.

      
Audit note

      
A warning or parsing detail that explains a placement issue such as overflow, unknown seats, skipped rows, or duplicate names.

    

  






  

    
References: