We know from several studies of public opinion and sentencing that the public believe sentencing is too lenient. However they also underestimate the severity of current sentencing practice. In this submission to the Justice Committee, we summarise the research into public opinion and understanding of sentencing practices. We call on the government to conduct internal training and increase public awareness about the evidence on what works to reduce crime. This would boost confidence in the criminal justice system and increase support for effective methods of resolving crime without going to court.