So helping students become independent learners has to be on the right side of the arrow. And that means being an effective teacher goes on the left. In our second sentence, we see until, which is an if not. So we need to put on the left side, if teachers do not have the power to make decisions in their own classrooms. The tricky thing here is that the other idea needs the knot that appeared earlier in the sentence. We're saying if teachers don't have the power to make decisions in their own classroom, then they cannot enable their students to make their own decisions.