Here are the possible solutions for proves one's literacy clue
Answer
Clue
Relevancy
reads
Clue
Proves one's literacy
Proves literacy
Demonstrates one's literacy
Definition
READ, to look at and understand written matter
read
Clue
Prove one's literacy
Show one's literacy
Definition
to look at and understand written matter
rockbottom
Clue
With 133, the name of the band whose members appear in the theme answers. (They disbanded in 2012 after raising millions for literacy, but they're reuniting this weekend for one last concert.)
amos
Clue
Baker/literacy advocate Wally who hosted "Learn to Read"