Posted by Steve Lay
Earlier this month I travelled to Michigan for the IMS Global Learning Consortium’s quarterly meeting. The meeting was hosted at the University of Michigan, Ann Arbor, the home of “Dr Chuck”, the father of the IMS Learning Tools Interoperability (LTI) protocol.
I’m pleased to say that, while there, I put our own LTI Connector through the new conformance test suite and we have now been certified against the LTI 1.0 and 1.1 protocol versions.
The new conformance tests re-enforce a subtle change in direction at IMS. For many years the specifications have focused on packaged content that can be moved from system to system. The certification process involved testing this content in its transportable form, matching the data against the format defined by the IMS data specifications. This model works well for checking that content *publishers* are playing by the rules, but it isn’t possible to check if a content player is working properly.
In contrast, the LTI protocol is not moving the content around but integrating and aggregating tools and content that run over the web. This shifts conformance from checking the format of transport packages to checking that online tools, content and the containers used to aggregate them (typically an LMS) are all adhering to the protocol. With a protocol it is much easier to check that both sides are playing by the rules — so overall interoperability should improve.
In Michigan, the LTI team discussed the next steps with the protocol. Version 2 promises to be backwards-compatible but will also make it much easier to set up the trusted link between the tool consumer (e.g., your LMS) and the tool provider (e.g., Questionmark OnDemand). IMS are also looking to expand the protocol to enable a deeper integration between the consumer and the provider. For example, the next revision of the protocol will make it easier for an LMS to make a copy of a course while retaining the details of any LTI-based integrations. They are also looking at improving the reporting of outcomes using a little-known part of the Question and Test Interoperability (QTI) specification called QTI Results Reporting.
After many years of being ‘on the shelf’ there is a renewed interest in the QTI specification in general. QTI has been incorporated into the Accessible Portable Item Protocol (APIP) specification that has been used by content publishers involved in the recent US Race to the Top Assessment Program. What does the future of QTI look like? It is hard to tell at this early stage, but the buzzword in Michigan was definitely EPUB3.