EFC quite different for my 2 children

The FAFSA sometimes asks ‘if you want to fill in additional information’ such as if you qualify for simplified assets, you can fill in extra information but it is not used to calculate the federal EFC. Some states require additional information but agwin, no used for the EFC. That might have happened here with the grad/independent student. The parents filled out the fafsa, but the I formation was not used for the EFC.