<p>is this sentence correct?</p>
<p>The ratty grey ones, though, were the shoes placed in front of me; they mocked me, knowing that the white shoes were only for school, knowing that the customers would notice the split aglets and worn area where my left toe was about to protrude.</p>
<p>Your sentence is confusing. Try revising it by splitting it up. For instance, “The ratty gray ones, though, were the shoes placed in front of me; they mocked me, for they knew the white shoes were only for school. They knew the customers would notice the split aglets. They knew everyone would see the worn area where my left toe was almost protruding.”</p>