I know that many people have trouble with English, the main reason being that Grammatical skills are not being taught as heavily in many American classroom anymore, so proficiency levels are dropping.

If a school offers classes such as philosophy, many find the subject difficult due to the logical and abstract thinking skills required.

Art can be difficult if you’re not talented or don’t understand it.

Foreign Languages are also difficult for many people, because they think that foreign languages are just English spoken with different, funny-sounding words when in reality it is a completely different system of communication.

Different people have different preferences for subjects thus the amount of effort that they put into a preferred subject is usually much more effort than they would put in a subject that they dis-like. This in my opinion effects what and how much they learn.

But while i do well in English, i have a hellish time in math, and sometimes science. I’ve been told that many people who are good at subjects like English, art, music usually use the right side of their brains more than the left side.

Like when you learn to write you find yourself becoming accustom to using one of your hands, left or right. This is the same way for your brain, you automatically learn and think using one side of your brain more than the other, the right hemisphere or the left one.

The right side of your brain is responsible for art, music, (creative side of you)

While the left side of your brain is usually for math problems, science problems, (used for logic)

It sounds to me like the majority of the kids in your school (who you say are having trouble in English) are more left sided, (thinking logically)

That or you just have a crappy English teacher.

:] Hope I’ve Helped.