If he had changed his residence to Ohio for the tax year, then he doesn't have to file a California return. He could have continued as a California resident and non resident for Ohio being he is a student and his home state can still be considered to be California.

Also, answering to your question: please mail both returns along with the federal to the California franchise board.

He will remain a CA resident.  He sold some stock and earned money working.  He will be filing a CA tax return and a nonresident tax return for Ohio.  

Among the documents that Turbotax printed with his CA tax return is a copy of his Ohio return.  Should the Ohio documents be included with the CA tax return?

There should be a page of Filing Instructions that printed with the California return detailing what needs to be mailed and where to mail it.

Thank you.

At the risk of appearing foolish . . .

The CA Return instructions direct me to enclose Federal Return and W-2s. The Ohio Return is not listed among the documents to be included.

So even though TurboTax printed it with my CA Return "packet", I do not submit the Ohio Return