Primary elementary (K-2): Generally learners in grades K-2 (ages 5 - 7 years).
Intermediate elementary (3-5): Generally learners in grades 3-5 (ages 8 - 10 years).
Middle school (6-8): Generally learners in grades 6-8 (ages 11 - 13 years).
High school (9-12): Generally learners in grades 9-12 (ages 14 - 18 years).
Undergraduate lower division (13-14): Generally learners in the first two years of a baccalaureate degree or completing an introductory course.
Undergraduate upper division (15-16): Generally learners in the last two years of a baccalaureate degree or completing an advanced course.
Graduate: Learners who have completed an undergraduate degree.
Professional: Learners seeking to extend professional skills in the workplace
Informal education: Learners in museum settings or community continuing education programs.
General public: Learners in the general population; Also use for resources in which all the audience categories apply.

JESSE-XX-YYY-ZZZ

XX - last two digits of the year of publication
YYY - resource type
ZZZ - sequential number of submission