I am aware of the purpose of Student Loans.
However if not immediately used, I park some of the money in a savings account.
But would it be legal to use the same funds in a retirement account (roth ira), brokerage (index funds, stocks, bonds, etc.), and college 529 accounts, to purchase investment instruments?
Given the nature of the question, let me know if I should ask a mod to migrate this question to Personal Finance and Money SE instead.