Positive: I think that tutoring is a great way for a student to be able to reteach themselves something and even get a better understanding of what they are teaching. Strong example.
Use of Percy: I think that all of your quotes from Percy are very strong and well organized, they all do a good job of supporting the ideas you are conveying.
Negative: Where will the topics be coming from? Will the teacher provide topics or will students be able to pick their own? I think you should be more clear on this.