Expeditionary Learning Implementation Review: Instrument Development
Expeditionary Learning (EL) and Institute worked together to develop a new instrument to assess the extent to which EL core practices are implemented. The instrument was constructed using the principles of the Rasch rating scale measurement model.
Three pilot tests were conducted. Full-scale implementation and validation data were collected from 147 schools across the United States. Factor analyses indicate one dominant factor. The items themselves are internally consistent within each of the separate dimensions and overall. The Rasch model rating scale analysis of the data supports the hypothesized conceptualization and development of a meaningful continuum for both schools regarding their overall level of implementation of the EL practices, and the degree of difficulty in implementing the practices.