If my ex owes child support and school loans, who will receive the money first?

[Fern]

The refund is applied first to any federal back taxes owed. Child support is paid next and lastly any other obligations such as student loans.

 https://turbotax.intuit.com/tax-tools/tax-tips/Taxes-101/Who-Can-Garnish-an-Income-Tax-Refund-/INF19...