LAR Defined

  • The lar framework was designed to create metadata that complies with the principals of Learning Application Readiness. An educational resource might be classroom-ready, but unless the metadata describes it in a useful way, the resource will not be discoverable.
  • More fields are required in lar than in nsdl_dc (for example, education level, format, language, etc.). There are also more fields that use controlled vocabularies instead of free-text. This helps to ensure metadata is of the highest quality, which in turns allows us to build user-centered search services on top of the metadata.

XML Schema Information

NOTE: This information is required to make this metadata format work in the jOAI application:

NOTE: Schema information is always the most accurate information; it supersedes any documentation

Sample Records in XML

Creating a LAR metadata record

The LAR Best Practices contain detailed instruction for each lar metadata field, however here is a brief overview of the required fields (field names in italics):

NOTE: To find definitions of the controlled vocabulary terms listed below, please refer to the LAR Best Practices.

  • Know the URL of the resource---this will be the resource identifier. Identifiers must be the actual URL on which the resource is located. If you would like to provide a landing page or supplemental information page, there is an optional field for that (partnerURL). 
  • The date of the metadata record's creation is recordDate. The date of the resource, on the other hand, is date, and must specify dateType ('Created', 'Published', or 'Modified').
  • Choose the appropriate title for the resource and give a brief, informative description. Keep in mind that search results for user search terms will be ordered depending on the text in these fields.
  • Select one or more subject terms from the controlled vocabulary list at
  • Choose language from the controlled vocabulary list at
  • As all NSDL resources must be internet-based, determine what applications are necessary to use the resource. Then choose a format from the controlled vocabulary:
  • Education Level is a very important search criteria. Choose which _educationLevel_ the resource is intended for from the controlled vocabulary:
  • For audienceRefinement, choose whether your resource is intended for an 'Educator' (i.e. a teacher's guide or professional development information) or a 'Learner' (i.e. a game or animation). In many cases it might be appropriate for both, in which case select 'Educator and learner'.
  • The type of resource should be chosen from a controlled vocabulary at
  • The entity responsible for the resource's creation (as opposed to the metadata record) should be listed as contributor. Choose from Collection Developer, Creator, Editor, Funder, or Publisher as contributor role.
  • Use the accessRestrictions field to indicate whether the resource is available for free, or by subsription or purchase using the controlled vocabulary: 
  • Use the license field to describe the type of licensing for the resource's intellectual property rights. For its attribute license name, choose either from the controlled vocabulary at or enter another value free-text. Choose from one or more of the controlled vocabulary for the other attribute, license property


  • No labels