I have different academic needs than my classmates. Each one of us has different learning styles. In other words, the way our minds process information varies from individual to individual. You may have friends who are mathematical whizzes but struggle with reading. You may know people who are athletic superstars but flounder with time management.
Some curriculums pose more of a challenge than others.
For many people, additional tutoring outside the classroom helps. But some people need more accommodations than tutoring alone.