Please answer the following question: St Olave's Grammar School - St Olave's and St Saviour's Grammar School (/olvz/ or /lvz/) is a highly selective boys' secondary school in Orpington Greater London England. The school is also known as St Olave's St Olave's Grammar School STOGS or simply Olave's.The school in its current state was formed from an agreement in 1896 between two schools St Olave's Grammar School (Charter 1571) and St Saviour's Grammar School (Charter 1562). Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Educational Institution