A combination picture shows Antonia Adebambo, Rebecca Wynn and Charlotte Murphy reacting as they open their A-level exam results at Withington Girls School in Manchester, northern England August 20, 2009. Sixth-formers have once again performed better than ever in A-level exams with more than a quarter of papers awarded a top A grade, examining bodies said on Thursday. REUTERS/Darren Staples (BRITAIN EDUCATION)