As a certified teacher from Pennsylvania and a mother of a student who was diagnosed with an auditory memory learning disability. I can tell you from personal experience that many factors can be attributed to how well students perform in the classroom. It is the teacher primary objective to ensure that everyone student in the classroom has an equal chance to learn and achieve the lesson's learning objectives. By the way, I am so proud of my daughter because she is now a teacher and has overcome her own disabilities and is actually certified to teach learning disabled children!