Yes, apparently brain drain can affect law-minded folk even before they start practicing:
“According to the results of the latest bar exam, it is. The National Conference of Bar Examiners announced that scores from the July 2014 multistate test were down significantly from where they were a year prior. In an attempt to explain this drop, the NCBE released a memo written by its president, Erica Moeser, addressed to law school deans across the country.”
Read: Is the Legal Profession Suffering from Brain Drain? at Vault