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The Siemens Foundation has named three students from Illinois to the shortlist of Regional Finalists in the prestigious Siemens Competition in Math, Science & Technology: Marc Bouchet and Sarah Posner of Evanston, both seniors at Evanston Township High School, will compete for the highest science honor awarded to American high school students. The two designed and built tandem organic solar cells employing next generation polymers.

“These students have invested time, energy and talent in tackling challenging scientific research at a young age,” said Jeniffer Harper-Taylor, president of the Siemens Foundation. “The recognition they have won today demonstrates that engagement in STEM is an investment well worth making.”

The third Illinois student, Ravi Jagadeesan of Naperville, a junior at Phillips Exeter Academy in New Hampshire, will compete on a team with Nihal Gowravaram of Acton, Mass., with a research project using mathematics to study pattern avoidance in alternating and generalized alternating permutations.

Marc and Sarah presented their research to expert university judges at the University of Notre Dame in South Bend on Nov. 9 and 10.

A total of 2,255 students registered to enter the 2012 Siemens Competition, with 1,504 projects submitted.

Administered by the College Board, the Siemens Competition awards one $3,000 prize to an individual and one $6,000 prize to a team at each of six regional competitions held at leading research universities.