However, it's implied through several instances:
* The "colored folks" live in a separate part of town. This separation highlights the deep-rooted segregation in Maycomb, making it clear that biracial children would be forced to live in the black community, even if they were lighter skinned.
* Tom Robinson's trial shows how the white jury and community are biased against a black man, even if innocent. This reinforces the systemic racism and prejudice that would likely extend to children of mixed race.
* Aunt Alexandra's constant reminders about family reputation make it clear that marrying a black person would be considered a social disgrace and would harm the Finch family's standing in Maycomb. This suggests that biracial children would face social stigma and ostracism.
While Jem doesn't discuss the specific treatment of biracial children, the book's context makes it clear that they would likely face discrimination similar to black people in Maycomb.
The novel doesn't explicitly compare Maycomb to the North, but it implies that the North was considered to be more progressive in terms of racial equality. This is shown through:
* Atticus's statement that "there are some things in this world that don't need changing" suggests that he sees the South's racial segregation as a problem that needs fixing. This implies that the North, where the Civil Rights movement was gaining momentum, was seen as a place with more opportunities for racial equality.
* The mention of "mixed children" in the North. This suggests that the North was more open to interracial relationships and that biracial children wouldn't necessarily face the same level of stigma as they would in Maycomb.
However, it's crucial to remember that even though the North was considered more progressive, it still had its own issues with racism and discrimination.
In summary, Jem doesn't directly address the treatment of biracial children in Maycomb, but the novel's context suggests that they would likely face similar prejudice and discrimination as black people. The North, while seen as more progressive, still had its own issues with racial inequality.