YA Coming of age book
Its about a brother and sister, the sister gets good grades and her brother is struggling. He disappears most times and is a disappointment to his father.
One night they get into an argument and the father hits his son, the son takes off.
One day the family (minus the son, I think) are driving around the neighborhood and they see that the rundown houses have been fixed or improved. There is this one house that has a ramp because the homeowner is in a wheelchair. A neighbor says that the homeowner has been going up and down the ramp like a little kid.
He also tells the family that its the son that has been doing all of these kind things for the neighborhood.
That's all I remember.
If anyone can tell me the name of the book or the author it would be much appreciated