Students from Tolland High School, Bolton High School and East Catholic High School were allowed to attend after educational briefing sessions by local lawyers.
Tolland High School Principal Dominique Fox said it is was the best was possible to learn about the legal system at its highest level in the state.
The real-life scenario began about an hour before the first case at 9:30 a.m. Students lines up for metal detector screening by real marshals.
One twist was breakfast, something the justices said they are not used to getting before hearing cases.
Once inside the auditorium, it was all business as all rose when the justices entered the chamber and took their places.
The first case was State of Connecticut v. Robert Eleck out of the Judicial District of Stamford-Norwalk, a first-degree assault conviction. It examined whether Facebook messages purportedly sent by a witness were inadmissible for lack of sufficient authentication.
William Westcott argued for the defense while Assistant State's Attorney
Timothy Costello presented for the prosecution.
Justices had several questions in what seemed to be a perplexing debate over evidence collected in the ever-emerging world of online communication.
A decision could take some time to be written, a Judicial Department spokeswoman said.
The second case argued was, Roland Todd White v. Mazda Motor of America, Inc., a civil matter.
Briefs are available in both cases at http://blog.ctbriefsonline.com/On Circuit is an educational initiative that started more than 25 years ago in an effort to provide students and educators with a greater understanding of the state's high court and its role and procedures.