Organize teacher and learner utterances turn by turn and code them using COLT Part B.
AI-assisted classroom analysis
AI COLT Part B Analyzer
Automatic Language Classroom Analyser
Turn classroom transcripts into structured analyses of teacher and learner interaction using COLT Part B. AI-generated first-pass coding is presented for human review and correction, then exported as research-ready data.
Summarize target-language use, information gap, sustained speech, and incorporation of utterances.
Review AI decisions and flagged segments, then correct the coding where needed.
Export edited data and summaries in formats suited to research and collaboration.
Sequential interaction views and vocabulary analysis are being considered as future extensions.
This work was supported by JSPS KAKENHI Grant Number JP24K04125.
Update
The home page now makes the analysis purpose and workflow easier to understand at a glance.
Start analysis
Prepare your classroom transcript and start the analysis.
Upload a TXT / VTT file or paste your transcript, then identify the teacher and learner speakers before analysis.
How to use
Seven steps from recording to analysis
Transcribe a recorded lesson, confirm the speakers, and run the AI analysis. Always review the result and correct it where necessary.
- 1 Record the lesson
- 2 Transcribe the recording
- 3 Identify teacher and learner speakers
- 4 Run COLT Part B AI coding
- 5 Display the coding results
- 6 Review and correct the AI coding
- 7 Review summaries and export the data
Available results
- Quantitative analysis
- Turn-by-turn coding
- Summaries and export files
Resources
Resources and guidance
Find background information about COLT, important usage notes, and answers to common questions.
Presentations and papers
Related presentations and papers will be listed here when they are ready for publication.
Terms of use
This tool is intended to support classroom and educational research. Because the analysis includes AI-generated estimates, researchers must review the results before using them.
Privacy policy
Transcripts may contain personally identifiable information. Confirm whether anonymization is required before uploading, and manage the recipients and retention period of exported files appropriately.
System requirements
Use a current version of a major browser with JavaScript and cookies enabled, together with a stable network connection.
Q&A (frequently asked questions)
What do I need to start an analysis?
Prepare an account and a lesson transcript in TXT or VTT format. You can also paste the transcript directly.
Can I use the AI coding in research without reviewing it?
AI output is a first-pass decision. Review the flagged segments and context, then make any corrections needed before use.
Which result formats can I download?
Depending on your workflow, you can download the COLT Part B table, summaries, JSON, and TXT files.