This document contains resources and suggested steps to help secondary teachers organize and conduct a mock trial. Although written specifically for use in Missouri, the document can easily be used and adapted by teachers in other states. The authors believe that a mock trial is a valuable learning experience in many ways. It may be used to help students learn about specific areas of the law, courtroom procedures, roles of courtroom personnel, and how U.S. courts resolve conflicts peacefully. The first section of the document describes "The Order of a Civil Trial in Missouri" including jury selection, beginning the trial, opening statements, presenting the evidence, jury instructions, final arguments, and jury deliberation. A statement is presented of facts for a landlord-tenant case study--"W.B. Walker v Cynthia Jones." Resources and background information needed for students to participate in this mock trial are provided. For example, documents are listed which the plaintiff and his attorney will need, such as notice to quit and summons. Some cardinal rules used in cross-examining a witness are provided for students who role play the attorneys in the trial. A chart depicting the courtroom seating arrangement is provided to help the clerk check before the trial to see that the courtroom has been set properly. The document concludes with a general discussion of how to prepare for mock trials and other legal proceedings including appellate hearings and administrative hearings. Simplified rules of evidence which the students can use in this mock trial are also presented. (Author/RM)