The context of the following conversation is Tracy's assay was vague and simple so Sydney changed it for the better to help Tracy get a better grade.:
Tracy says My way was vague and simple, at least that's what Sydney told me.  He changed it, so that I can get better grades..
The friend responds Did that help?.
Tracy responds My grades have improved this semester.  I am up by a whole grade in every subject..
The friend responds That's amazing.  You are putting in the work..
Tracy responds Sydney is a great tutor. He motivates me to study harder..
The friend responds Sounds like he's a great influence..