Secondary schools from all over Wales have been taking part in the finals of the EESW Awards 2017.
Split between north and south Wales, the competition was supported by Welsh Government, companies and universities.
The so-called Big Bang event fair in north Wales saw main awards go to Ysgol Glan Clwyd, Alun School 1, Ysgol Friars 1 and Ysgol Uwchradd Caergybi.
The top south Wales prizes were awarded to Cynffig Comprehensive, St Davids Catholic College, Ysgo Y Strade, Ysgol Bro Myrddin, Ysgol Gyfun Gymraeg Bryn Tawe 2 and St Alban’s RC High School.