This folder contains a lesson event recording tool (based upon a Microsoft Excel (2016) spreadsheet). It was developed and applied during a pilot study at a small UK school. The tool was used to record the activities of 67 students and 7 teachers in 40 lessons. 21 of the lessons have been processed and the data from these are included in the folder, along with files explaining the data format plus instructions for using the program. The main advantages of this tool are that it can be used in any lesson, not just those using technology, and it produces instant data for analysis.