Respond Online: Complete the Juror Confirmation Form online at the MA Jury website. A jury trial in District Court will consist of six jurors, in Superior Court a jury trial will be comprised of 12 jurors.According to Massachusetts law, an accused must be tried in court within 12 months after the date of arraignment. Get familiar with the Massachusetts Rules of Criminal Procedure. Find essential legal guidelines and processes for criminal cases in the state. Interested in the Massachusetts jury selection process? Read F. Robert Allison's blog post to learn the ins and outs of jury selection in MA. The jury selection process in Massachusetts is a critical aspect of the legal system. It aims to ensure that each trial has a fair and impartial jury. Massachusetts criminal laws require an opportunity for you to have a clerk magistrate's hearing for most misdemeanors.