Enables users to handle the dataset cleaning for conducting specific analyses with the log files from two international educational assessments: the Programme for International Student Assessment (PISA, < https://www.oecd.org/pisa/>) and the Programme for the International Assessment of Adult Competencies (PIAAC, < https://www.oecd.org/skills/piaac/>). An illustration of the analyses can be found on the LOGAN Shiny app (< https://loganpackage.shinyapps.io/shiny/>) on your browser.