School funding is a massive mix of Federal, local, and state dollars. The most influential of the mentioned is local funding in which is based on property taxes in the surrounding areas. Thus meaning, in certain cases this can lead to great inequality in terms of funding to the schools. For example, many schools have an abundance of funding from which they can provide an extremely good education to its students. Whereas is a school is underfunded then the students are not receiving as good as an education.
The gross of inequality of school funding can lead to an array of problems. If in the cases of underfunded schools, new textbooks are extremely expensive than students are most likely being taught outdated material then they are placed behind their well funded counterparts.