Hello,

Depending on the topic you're discussing. Since many of my acquaintances didn't study at all in the eleventh grade, I can provide an explanation. At the mercy of their education, barely passed.

The fundamentals of vectors are necessary for understanding physics. Understanding the chapters on Units and Measurement will be beneficial for both physics and chemistry. Other than this, nothing from physics and chemistry in class 11 is actually necessary to comprehend the content in class 12 because the themes are so dissimilar.

It makes sense to be familiar with material from class 11 in mathematics. Please refrain from making selective choices.

Absolutely nothing about Economics is necessary to understand in class 11 in order to perform well in class 12. It's the same with English.

Regarding topics in business or the humanities, I am speechless.

At last, I will say don't skip class 11. In class 11 you will get lot of knowledge which will help you to study class 12 also.

Best wishes for your future.