One-third of the undergraduate student body at UC Davis has opted to stick around and attend summer school this year. About 4,000 students began taking classes last week. An additional 2,000 have already signed up for the second summer session program that begins in August. "Our surveys tell us that students take summer session classes because it is cheaper to take 16 units in the summer than to pay quarter fees during the regularly scheduled academic year," says Dan Wick, summer sessions director. In addition, he says, "students that were locked out of classes because of high enrollments experience fewer crowds in the summer, and students say they can concentrate on one or two courses rather than a full schedule of classes as they must during the academic year." The summer session program also offers students the opportunity to study in Europe, South America and Asia. Some UC Davis students are also now peering into Mt. Kilauea in Hawaii with geology professor Peter Schiffman, studying active volcanoes. In addition, the first summer session offers primary and secondary teachers an opportunity to learn how new technologies can best be used in K-12 teaching.