Tammy Tabush spent three years at the University of Chicago Law School learning how to become a lawyer. The Holland & Knight LLP associate described how last year, she took a two-day bar exam consisting of essays and 200 multiple-choice questions.“The exam costs $400. If you apply late, it costs $600. If you fail and have to take it again, it costs $300,” she said. “They recommend taking a Barbri or Themis bar review course beforehand, which cost me $2,695. Law firms sometimes pay for that, if that’s where you work …