The school uniform is a white short-sleeved shirt with a thin sky-blue strip/line around the sleeve and collar, and across the breast pocket.

The after-school dress code[4] is a pink shirt with blue strip/line around the sleeve and collar and across the breast pocket and a dark-blue shorts.

Our alma mater and our country We shall always hold them dear For the Lord will surely bless thee, good G.S.S.O[6] Past students of Government Secondary School, Owerri refer to themselves as "Ogssians".

The Old Boys' Association has a national structure coordinating branch groups' activities and class sets.

The groups offer infrastructure, educational materials, and sports equipment, donate to the school or hold motivational talks to positively inspire current students.