The Schoolhouses were placed close to the roads to make it easier to get to in bad weather. Remember that the children only went to school during the winter months, as they were needed on the farms to help during the spring and summer.
The stove would most likely be put on a north wall, as that would be the coldest side of the building. As children of all ages were in the building, the stove would be placed away from where they would be studying.
Over time, there was also a two month and seven-day summer term & the winter term went for two months and four days. It was entirely a different way of living than what we are used to today. Those that were teaching the summer terms were paid $16.00 & for winter terms they were paid $36.00.