Since Mr. Hansborough became our teacher, I've noticed a significant improvement in test scores and student comprehension in history. His walkthroughs and helpful approach have been instrumental in this progress. Removing him could lead to a decline in test scores and disrupt the learning environment. Introducing a new teacher would require students to adjust to a different teaching style, potentially causing difficulties and discomfort. The familiarity and comfort students have developed with Mr. Hansborough's teaching methods would be lost, which could negatively impact their academic performance.