A. Income segregation between school districts affects the resources that are crucial to students' success. These resources include school funding, teacher quality, and students' peer characteristics.

B. Income segregation creates an environment that pools all of the low-income students together, leading to a higher cost in providing a safe learning environment and providing good quality teachers.

C. Income segregation decreases the likelihood of high school graduation for low-income students but does not affect high-income students.