Effective, it supports the claim clearly and logically
The cartoonist is looking to reform the school system, if you look closely to the picture there is a public school outside of the "loop" and the private school is in the loop
You could find a review for this in an entertainment magazine, or it could be found on a music website like billboard.com
"Keep," this is because the adverb always modifies the verb, and a verb is a action, and keeping is an action.
