Education in 1870

Education is and was always important for the citizens of a city, county, and state, and now especially nationally. In Cherokee County in 1870 there was a total of 23 teachers. The article in the Centennial edition of the Cherokee Times was: 23 Teachers Got Total of $2309
The life of a school teacher has evidently always been one of many virtues other than obtaining compensation from the “root of all evil” namely money.
According to statistics, the 23 public school instructors of Cherokee county, in 1870 received a total of $2,309 for their services. Pay of the eight male teachers averaged $8.25 a week while the ladies netted $6.75 a week. There was not an exact enrollment for the county but probably less than one hundred students county wide.
Total value of the schools in the county at this time amounted to some over $7000. The buildings consisted of one brick structure, 8 frame dwellings and the remainder were the one room log schools.
I am just curious why the male teachers made more money than the females.?!