I have found that in the classroom some students catch on very quickly, while others take more time. I work to explain things differently to these students but sometyimes struggle with the quiet ones that don't ask for help. I worry that they will pay for an education that they don't take full advantage of so I try to draw them out of their shells and use the assessments to see how well they are understanding the material. Ultimately it doesn't matter how long it takes, as long as they get it.