looks like about 50% who try that route are successful:
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1894445
https://www.npr.org/2020/01/22/797330613/myth-busted-turns-out-bankruptcy-can-wipe-out-student-loan-debt-after-all
...Iuliano's research finds that about half the time the person gets some or all of the student loan debt erased. One study he did found that they got help through bankruptcy about 40% of the time. And he says more recent data from this past year show that figure rising to more than 50% of the time.
"So I think that's really important for bankruptcy attorneys to see that there are judges out there who are willing to grant undue-hardship discharges and that people are much more likely to obtain relief in bankruptcy for their student loan debt," Iuliano says.
Just this month, a federal judge in New York discharged more than $220,000 in student loans for a borrower. In her ruling, Chief Bankruptcy Judge Cecelia Morris criticized the fact that even many lawyers "believe it impossible to discharge student loans." She added, "This Court will not participate in perpetuating these myths."....
Edited by Spanky at 17:15:35 on 01/23/20