What prevented children from attending Public high school in 1900s?

In the early 1900s, several factors prevented children from attending public high school, including economic barriers, as many families relied on their children's labor for income. Additionally, societal norms often prioritized education for boys over girls, limiting access for female students. Geographic isolation also played a role, as some rural areas lacked nearby high schools. Furthermore, racial segregation and discrimination restricted educational opportunities for minority children.