Working at the laboratory
Three teenager students writing in their notebooks.
Students sitting side by side attentively in class
GLASGOW, UNITED KINGDOM - FEBRUARY 05: Pupils at Williamwood High School sit prelim exams on February 5, 2010 in Glasgow, Scotland As the UK gears up for one of the most hotly contested general elections in recent history it is expected that that the economy, immigration, the NHS and education are likely to form the basis of many of the debates. (Photo by Jeff J Mitchell/Getty Images)
