Yes, the charges in a Florida juvenile case must be proven true beyond a reasonable doubt. This means that the prosecution must present evidence to demonstrate that it is highly likely that the accused individual is guilty of the crime. The burden of proof lies with the prosecution, and they must prove their case beyond any reasonable doubt in order for a conviction to be handed down.
In juvenile cases, the court typically considers a variety of factors when determining guilt or innocence. These include the age and maturity level of the accused, their prior criminal history (if applicable), and other relevant circumstances surrounding the alleged crime. The judge will also consider testimony from witnesses and experts as well as other forms of evidence before making their decision.
Ultimately, it is up to the judge or jury to determine whether or not the evidence presented by the prosecution is sufficient to prove guilt beyond a reasonable doubt. If they decide that there is insufficient evidence, then the accused will be acquitted of all charges.