My question involves child support in the State of: Tennessee. I was married in 1991 and divorced in 1996 in Tennessee. We have two children. We have joint custody of both children with primary residence of our daughter being with me and our son with their father. We agreed no child support. Father maintains medical insurance on the children and we split all medical bills not covered. Our son is now 18 as of October. He will graduate from high school May 2011. He plans to attend college and remain living with their father. My question is now we have one independent and one dependent child. Should the father, custodial parent of the 18 year old now be responsible for child support for the 15 year old living with me?