Professor Percival's Environmental Law class has an unusual assignment: pick an environmental issue they care about and make a short documentary film about it. Each year students in the class have formed small groups to produce some remarkable films. Professor Percival explains that while the film production exercise is ungraded, students discover that they learn a lot from it. "It challenges students by forcing them to confront the difficulty of translating complicated legal and policy issues into a form the average audience can understand." Among his other objectives are to "give students an opportunity to unleash their creativity" and simply to "make Environmental Law even more fun."
In March of each year, the Law School hosts an Environmental Law Film Festival and Awards Ceremony to honor the latest group of student filmmakers. Based on voting by an independent panel of judges, awards are made to films in eight categories. The categories are: Best Picture, Best Acting, Most Educational Film, Best Narration, Best Interview, Best Original Film Footage, Best Use of Humor, and Best Use of Animation/Special Effects. In keeping with the environmental theme, the students whose films win the award are given "golden trees."