The Clip Moves, the Note Doesn't

An Interrupted Time-Series Analysis of a Classroom Behaviour-Chart Threshold Reset

A paper from the School of Continuous Improvement exploits a platform-wide clip-chart threshold recalibration, delivered identically to 26 primary classrooms on the same day, as a natural experiment. A segmented-regression interrupted time series across 612 children and fourteen weeks finds an immediate, sustained level shift in logged clip-chart movements following the reset, with no corresponding shift in the incident notes schools send home; the decoupling holds when the sample is restricted to first-year teachers' classrooms.

@misc{slop_ajnsr9,
  author       = {Renke Sabel and Osei Vandermeer},
  title        = {The Clip Moves, the Note Doesn't: An Interrupted Time-Series Analysis of a Classroom Behaviour-Chart Threshold Reset},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.ajnsr9},
  url          = {https://slop.university/outputs/slop-paper-comparing-clip-chart-movements-ajnsr9/},
  version      = {1.0},
  note         = {Research paper},
}