Can a CBSE student fail in class 8?

No, a CBSE student cannot officially "fail" in class 8. CBSE (Central Board of Secondary Education) does not have a formal system of failing students in class 8. Students are promoted to the next grade regardless of their performance. However, this doesn't mean there are no consequences for poor performance. Students may be required to attend remedial classes or extra tutoring to improve their understanding of subjects they struggled with. Their report card will reflect their performance, but they will still move on to class 9.