History
MIKKELI PRIMARY SCHOOL (1889 -> )
Mikkelin kansakoulu
Päämaja School is the oldest primary school in the town of Mikkeli. Over the course of time it has had several names. The first primary school in Mikkeli initially operated in different places around the town until the wooden building was brought into use as late as 1889. At that time the name was Mikkelin kansakoulu (Mikkeli Primary School). The present-day stone building was completed in the autumn 1902.
MIKKELI CENTRE PRIMARY SCHOOL ( -> 1974)
Mikkelin keskuskansakoulu
When more primary schools (Linnamäki, Lähemäki, Rouhiala) were built in other parts of the town, too, (or rather: when they were united under the control of the school system of the town together with the union of suburban areas and the town of Mikkeli), our school was distinguished among the other schools by virtue of the official title Mikkelin keskuskansakoulu (Mikkeli Centre Primary School).
CENTRE SCHOOL (1974 -> 1992)
Keskuskoulu
The (old) primary school system finished on 1st August 1974 because of the new comprehensive school system. The name changed again. It became Keskuskoulu (Centre School) or as it officially was known as Keskuskoulun ala-aste.

HEADQUARTES SCHOOL (1992 -> )
Päämajakoulu
To respect traditions in 1992 we changed the name of our school into Päämajakoulu (Päämaja School / Headquarters School) with the co-operation of the town council, because during the last wars in 1939 - 1945 the school had been the headquarters of the Finnish Army and Marshal C.G.E. Mannerheim. As a concrete memory of those times there is a Headquarters Museum (founded on 4th June 1974) operating as a separated unit at the end of the building.