SAN RAMON -- Transformed for the day into draft resisters, hippies, cops, politicians and protesters, students at Dougherty Valley High School immersed themselves in the 1960s on Friday.

The school's second annual "Vietnam Day" took weeks of research as students prepared for roles on both sides of the political fence, pro- and anti-war alike.

More than 200 junior class students, all U.S. history students, took part. The day includes speakers, including veterans of World War II, Vietnam and Korea and current conflicts, petition signing, demonstrations, a protest march, and an afternoon in Woodstock -- on the school lawn.

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Candace Hilderbrand, 17, and other students hold mock protest signs during Dougherty Valley High School’s "Vietnam Day," a full-day
Candace Hilderbrand, 17, and other students hold mock protest signs during Dougherty Valley High School's "Vietnam Day," a full-day simulation surrounding the Vietnam era, held at the high school in San Ramon, Calif., on Friday, May 31, 2013. Students took on various roles in order to understand the multiple perspectives for and against the war. The entire Junior class were divided into anti-war and pro-war groups and spent two weeks preparing their roles. The event featured a mock protest, meeting with veterans from World War II, Korean War, Vietnam War and the current war. A Vietnam war era Army Huey helicopter also landed on the baseball field for the students to tour. (Doug Duran/Bay Area News Group)