Original sentence: In 2007 and 2011 the section was placed first, and in 2010, third.Students can join the Contingent from the September they enter Year 9; they are issued with uniforms, but are usually not permitted to attend out-of-school activities until they pass training examinations.The RAF section has sent teams to the CCF/RAF National Ground Training Competition held at nearby RAF Cranwell, and in 2011 at RAF Halton
Edited sentence: Students can join the Contingent from the September they enter Year 9; they are issued with uniforms, but are usually not permitted to attend out-of-school activities until they pass certain training examinations.The RAF section has sent teams to the CCF/RAF National Ground Training Competition, held at nearby RAF Cranwell, winning 4 times, and being placed many more times, since 2000.Their most recent victory came on May 8th 2011 where the national finals were at RAF Halton instead of Cranwell