adult child earned Income

We have 2 children above 18 that have worked part time jobs. Our son is 18 and daughter is a 19yr full time student. Both have worked traditional part time jobs and each has an earned income less than $13,850 for 2023.  In addition, the ability to claim both children as a dependent is covered in divorce decrees, and they alternate yearly (this year we are claiming our 18 son).

 

Would I be correct that each of the children should file their own tax return, indicate they can be claimed as a dependent on someone else's return, and there is nothing additional I have to claim? IF I do need to report child's income, would this be only for the child we claim as a dependent this year?

 

thank you