scalogram

noun

sca·​lo·​gram ˈskā-lə-ˌgram 

: an arrangement of items (such as problems on a test or features of speech) in ascending order so that the presence or accomplishment of an item at one level implies the presence of or the capability to accomplish items at all lower levels

Word History

Etymology

scale entry 5 + -o- + -gram

First Known Use

1944, in the meaning defined above