In Mexican Whiteboy, where was Danny's dad?

Danny's father
disappeared from his life a long time before the story takes place. His father is Mexican
American, while his mother is white. Danny feels a sense of isolation and confusion because he
does not know how to define himselfas white or as Mexican in origin. He attends a private school
where he feels a shade darker than everyone else, but with his dad's family he feels very white.
While Danny does not know why his dad left, he believes that his dad went back to Mexico because
his son is part white....