nongraded
adjective
non·grad·ed ˌnän-ˈgrā-dəd 
1
: not assigned a grade : not graded
a nongraded course/assignment
2
: having no grade levels
a nongraded school
: not divided into grade levels nongraded students
Word History
First Known Use
1869, in the meaning defined at sense 1
- double-minded
- double-name paper
- double-nose
- double-nosed
- double-o
- double-page spread
- double-park
- double-parked
- double-parking
- double-parks
- double-pitch
- double-pole switch
- double-precision
- double-print
- double-queued
- double-quick
- double-quirked bead
- double-reef
- double-refined iron
- double-ring
- double-ripper
- double-rivet
- double-runner
- double-seater
- double-set trigger