It's best to file a motion for change of custody, but you can start by contacting child support enforcement to present evidence that the child is living with you, though you may need to wait until after school starts.
age 21 see link
no
It is my understanding that if the noncustodial parent is paying child support in the state of Mo. and the child decides to live on campus/away from custodial parent while attending college and noncustodial parent is paying % of college expenses that include room and board a modification/reduction in child support may be in order. However I would like to see a court case/opinion regarding this matter.
no
Generally, no.
The biological parent is legally responsible for paying child support. A step parent is not legally responsible for paying child support.The biological parent is legally responsible for paying child support. A step parent is not legally responsible for paying child support.The biological parent is legally responsible for paying child support. A step parent is not legally responsible for paying child support.The biological parent is legally responsible for paying child support. A step parent is not legally responsible for paying child support.
NO!
Yes
no
yes
Yes. They are still the child's parent and responsible for supporting their child.
no