Complex sentence: The school adopted a Bilingual name Ysgol Dyffryn Aman/Amman Valley School prior to 2011, however following education reform in the Dinefwr area, the board of the governors unanimously voted in favour of changing the name of the school to Ysgol Dyffryn Aman.
Split into simpler sentences: The school adopted a bilingual name, Ysgol Dyffryn Aman/Amman Valley School, prior to 2011. Following education reform in the Dinefwr area, the board of the governors unanimously voted in favour of changing the name to Ysgol Dyffryn Aman.