For his or her failure or the child's failure? If the child, it depends on whether or not you have joint legal custody even though you may not have physical custody, and whether the truancy is occurring on your watch.
no
How does the two interfere with each other?
Age the age of majority, when they are also allowed to end visitation to school.
Yes, depending on state laws. But, a motion to modify can be presented to the court. see links
Yes.
Generally, the non-custodial parent should be informed of teacher conferences, parents' night and other school functions. They should be able to attend school functions as long as they maintain a congenial relationship with the custodial parent. The non-custodial parent does not have the right to take the child out of school, visit the child while at school, attend teacher conferences, choose the school, obtain the child's records or contact the school unless they have that right by a court order.Generally, the non-custodial parent should be informed of teacher conferences, parents' night and other school functions. They should be able to attend school functions as long as they maintain a congenial relationship with the custodial parent. The non-custodial parent does not have the right to take the child out of school, visit the child while at school, attend teacher conferences, choose the school, obtain the child's records or contact the school unless they have that right by a court order.Generally, the non-custodial parent should be informed of teacher conferences, parents' night and other school functions. They should be able to attend school functions as long as they maintain a congenial relationship with the custodial parent. The non-custodial parent does not have the right to take the child out of school, visit the child while at school, attend teacher conferences, choose the school, obtain the child's records or contact the school unless they have that right by a court order.Generally, the non-custodial parent should be informed of teacher conferences, parents' night and other school functions. They should be able to attend school functions as long as they maintain a congenial relationship with the custodial parent. The non-custodial parent does not have the right to take the child out of school, visit the child while at school, attend teacher conferences, choose the school, obtain the child's records or contact the school unless they have that right by a court order.
File an emergency motion for change of custody see link
Child support in Ohio usually continues until the child is 18, and up to the age of 21 if the child is in school. Whether or not you have to pay child support if the child is living with the noncustodial parent depends on the support order that it is in place Typically you can expect that you will have to expect to pay support.
The school system will send out a truancy officer, who will site the child for truancy and the custodial parent for allowing it. Your friend, the noncustodial parent, has recourse in civil court. He/she can take the custodial parent back to court (with the school records) and file to be named managing conservator.
Contempt of Court, which is consider a Change of Circumstances as regards a custody change. see link below
They will go to the school in the district of the custodial parent. If the parents can agree on a private school than the outcome could be different.
Your question is unclear. Do you live in another state and what is your intent? see link for help