Can I reenter Thailand on a multiple-entry visa after completing a 6-month Muay Thai course without needing another course?

The user inquires about reentering Thailand after a 6-month Muay Thai course on a multiple-entry visa. Answers indicate that reentry is generally permissible; however, there may be future checks on requirements such as having a minimum balance of 500,000 baht in a bank account, though currently, enforcement at the border is not strict. There is concern that attendance checks for educational visas (ED visa) might become more common.