PBCore recommends a picklist
using the Library of Congress groupings.
The ability to designate the intended users of a media item is especially important when matching a program's usefulness to a specific age range, audience grouping, or educational level.
PBCore recommends selecting from a picklist of
audience level identifiers as supplied by the Library of Congress educational sectors list.
Apply once within its container, pbcoreAudienceLevel (which itself can be applied multiple times for a media item).
Primary (grades 1-6)
Intermediate (grades 7-9)
High School (grades 10-12)