From EduTechWiki - Reading time: 2 min
“The IMS Question & Test Interoperability (QTI) specification describes a data model for the representation of question (assessmentItem) and test (assessmentTest) data and their corresponding results reports. Therefore, the specification enables the exchange of this item, test and results data between authoring tools, item banks, test constructional tools, learning systems and assessment delivery systems.” (IMS Question & Test Interoperability Specification WebSite, retrieved 16:40, 10 December 2006 (MET))
According to the IMS Question and Test Interoperability Overview (2006) QTI
is designed to facilitate interoperability between a number of systems that are described here in relation to the actors that use them. Specifically, QTI is designed to:
IMS QTI can according to the specification be integrated with IMS Learning Design and IMS Simple Sequencing
It has been adopted somewhat by some LMS (import/export). IMS Common Cartridge also implements a subset.
(by no means complete !! - Daniel K. Schneider (talk) 15:15, 20 June 2013 (CEST))