[1] Ysgol Gyfun Cymer Rhondda was established in 1988 in response to the growing demand for Welsh-medium education in the area.

Ysgol Gyfun Cwm Rhondda appeared in the popular show "Pam fi Duw?"

The long-running show gained a large Rhondda fan base, from both English- and Welsh-speaking people, because it was featured in a place they knew.

Three sixth-form students (Geraint Evans, Liam H. Thomas and Ashley Bateman) were selected for the Wales U/18 Rugby League squad.

Will Grif John was selected for the Welsh rugby union U20s squad and turned professional for the Cardiff Blues.