If they refuse to lower their academic standards to facilitate it then they are doing what is in the best interest of all of their students. A standard is in place to bring uniformity, such as common core attempts to do, so that students everywhere will receive the very same standard of learning. Students in poor areas are fighting many things that hinder learning so the root causes must be addressed or this will never change. Lowering educational standards is never a good thing and harms people in the long run. Schools with poor performing students need to analyze the root cause for the poor performance and present their case to the appropriate agency for assistance with it.
It's hard for me to parse my feelings for this problem with my feelings about our school system in the US. Both are so broken.
Schools are not responsible for what goes on at a child's home where the parents bear sole responsibility so stop trying to offload it onto the school system.
I agree that the child's home and community and sense of self within higher education are critical, and there is little the school system can do to confront these problems directly.
Except my main position is that segregation of communities and education are what reinforce these attitudes over the long run, not in the individual case.
Here's an analogy:
Cats and dogs aren't inherently enemies of the animal kingdom. However, their body language evolved separately, and diverged in ways where signals are opposite. For example, an excited and playful dog will wag his tail, which a cat perceives as a threat. Cats and dogs can, however, overcome this barrier, if they are raised together in the same household from the beginning.
Let's say we see the same problem, though. I think we do. If a household has a high degree of disarray, poverty, pessimistic attitude toward education, low education in parents (leading to shame in attempting to teach kids), high degree of childcare out of the home due to needing to work longer hours, high degree of single parenting, etc., then I would not begrudge you in saying that the failure is in the household to raise that child to thrive academically, and sending them to a better school will not fix this.
How does that scenario change over 25 years?