Women who obtain the jobs do not serve as professional miko for a long time, because most of them retire in their late twenties, having started to work upon the end of compulsory schooling (or more practically, after graduating from high school).
女性が本職巫女として奉仕できる年数は短く、義務教育修了後（現実的には高等学校卒業）から勤務し、20代後半で定年を迎える例が多い。