You’re putting in negative incentives to be good teachers.”
What he means is that teachers want to see their students succeed, therefore teach them to write in a way that will give them a high SAT score and hopefully get into a good college. But this approach stunts the student, because they are not thinking critically about what they are writing.
“a work of art is good if it has sprung from necessity.”
I don't know who Rilke is, but I can connect with this quote. We have so many examples of beautiful works of art that were inspired by tragedy. For example Amanda Gorman wrote "the Hill we Climb", ultimately addressing the fact that our country in in poor shape but we will rise to the occasion to fix it.