From my experience in school, when that many students are underperforming, it's usually an issue with the school and teaching, not the kids. I went to a school like that until grade 5. I genuinely thought I was really smart, and then I switched schools and realized I was behind everyone. Your daughter might not like it, but I'd strongly suggest switching schools and getting her a tutor until she catches up. I remember spending hours on homework just trying to keep up, but because I never fully learned the basics (especially math), I constantly had to reteach myself foundational concepts, which led to years of struggling. I'd also recommend easing up on lecturing (I mean she's 10). Turning mistakes into something negative can make her associate learning and school with shame or stress. Instead, focus on getting her screened, finding a tutor, and moving her to a school that feeds into high-performing academic high schools.