Okla. Stat. tit. 10A, § 10A-2-2-401: Trial by jury

In adjudicatory hearings to determine if a child is delinquent

or in need of supervision, any person entitled to service of summons

or the state shall have the right to demand a trial by jury, which

shall be granted as in other cases, unless waived, or the judge on

the judge's own motion may call a jury to try any such case. Such

jury shall consist of six persons.