Data for the study: Assessor experience, not rubric type, determines grading reliability biosciences coursework.

These data relate to an investigation into whether analytic or holistic scoring rubrics and/or scoring guidance affects the reliability and variance of essay grades when comparing experienced with inexperienced assessors. Explanation of the data file contents are contained within the included README file.This study was granted ethical approval by the University of Sheffield Ethical Review Panel. Reference numbers 048414 and 065176.