Prince Charles and his wife, Camilla, the Duchess of Cornwall, pose for a photograph with principal Kit Pappenheimer, left, and Alice Waters, right, executive chef and owner of the Chez Pannise restaurant. The royal couple toured the organic vegetable garden outside Martin Luther King Middle School in Berkeley, Calif., Nov. 7, 2005.
Prince Charles speaks to sixth-grader Trefor Szabo and Leslie Stenger, his teacher at Martin Luther King Jr. Middle School in Berkeley, Calif., Monday, Nov. 7, 2005.
Prince Charles shares a laugh with students at Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005.
Camilla, Duchess of Cornwall, chats with a student during her visit to Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005.
Berkeley chef Alice Waters discusses her garden with Britain's Prince Charles during a visit to Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005.
Camilla, Duchess of Cornwall, tours a schoolyard garden at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley, Calif.
Camilla, Duchess of Cornwall, California first lady Maria Shriver, center, and Prince Charles tour the edible schoolyard classroom at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley.
Maria Shriver and Prince Charles tour an edible schoolyard at Martin Luther King Jr. Middle School Nov. 7, 2005, in Berkeley, Calif.
Prince Charles and Camilla talk to students preparing a pizza with Alice Waters, right, the founder of the edible schoolyard at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkley, Calif.
Prince Charles and his wife, Camilla, Duchess of Cornwall, visit Martin Luther King Jr. Middle School on Nov. 7, 2005.
Camilla, Duchess of Cornwall speaks with California first lady Maria Shriver during the royal couple's arrival at Martin Luther King Jr. Middle School in Berkeley, Calif., on Nov. 7, 2005.
Prince Charles shakes hands with students from Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005. Charles and Camilla, the Duchess of Cornwall, visited the school's organic garden as part of their eight-day tour of the United States.
Prince Charles listens as teacher Esther Cook demonstrates the technique for cutting up a pumpkin squash at Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005.
Prince Charles greets students as he arrives at Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005.
Prince Charles and Camilla sample a harvest soup made of vegetables from the edible schoolyard at the Martin Luther King Jr. Middle School in Berkeley, Calif., Nov. 7, 2005. The edible schoolyard is a kitchen garden converted from waste ground where students grow and prepare their own food.
Camilla, Duchess of Cornwall, tours an edible schoolyard at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley, Calif.
Camilla, Duchess of Cornwall, California first lady Maria Shriver, center, and Prince Charles tour the edible schoolyard at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley.
Protesters express their thoughts prior the arrival of Prince Charles and Camilla at Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley, Calif.
Camilla, Duchess of Cornwall, talks to restaurateur Alice Waters during a visit to Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley, Calif.
Prince Charles and Camilla speak with students during a visit to Martin Luther King Jr. Middle School on Nov. 7, 2005, in Berkeley, Calif.