The analysis of differential item functioning (DIF) examines whether item responses differ according to characteristics such as language and ethnicity, when people with matching ability levels respond differently to the items. This analysis can be performed by calculating various statistics, one of the most important being the Mantel-Haenszel,…

Self-, peer-, and collaborative-assessment aim at integrating learning and assessment and promoting the active engagement of learners in the assessment process. This article presents a web-based environment, referred to as PECASSE, which supports these assessment methods. In addition to the basic functions of uploading learners'…