My husband is asking me to move to his hometown and take care of his ailing parents. While I don't want to run away from my duty as a daughter-in-law staying in a small town would not be good for the education of my six-year-old son. how do I explain this to my husband without hurting him?

yes it will be really difficult to wrap up everything and suddenly shift to their place, as the school and friend circle and everything else will have to be changed. also, if there are better opportunities where you currently are, it makes more sense to be here. talk to your husband and ask him to bring there him, at least for a few months. if they are able to adjust then maybe you guys can make this a permanent setup. or maybe you can look for another place nearby where they can stay so that you all have your space and are near them too