A school being well maintained and nicely decorated was related to better student behavior. The academic environment is important for resilience. Schools provide the academic environment. They can either undermine or enhance resilience. The size of the school is important.
Smaller schools are more protective.
Larger schools can get that small school feel if students are treated as individuals and not numbers. They can also get the small school feel if classes are smaller and guidance counselors have reasonable loads. High academic standards are protective. This cannot be stressed enough. Children from impoverished and stressful homes need high standards, not low standards.