An Estyn report following an inspection in March 2019 stated "Ysgol Penglais is judged to have made sufficient progress in relation to the recommendations following the most recent core inspection.

"[2] The previous Estyn report in 2018 had judged the school to be "in need of significant improvement".

In April 2007, a huge event took place involving the entirety of the student body collecting on the main playing field to form the shape of the world.

[5] This event raised money for the Send my friend to school charity and aimed to increase awareness for the Global Campaign for Education.

The event was photographed by the Royal Commission on the Ancient and Historical Monuments of Wales.