共きょう学がく校こうalso: きょうがっこうきょうがくこうMeanings1nouncoeducational school; mixed-sex schoolRefers to a school where both male and female students are enrolled, as opposed to single-sex schools. Commonly used in educational contexts.この地ち域いきでは、ほとんどの高こう校こうが共きょう学がく校こうです。