The Asahi Shimbun and NHK recently ran features about the changing job situation for high school teachers, specifically those who work for private institutions. According to education ministry figures, there are about 90,000 teachers working at private high schools nationwide, a number that has stayed about the same since 2001.
About 34,000 of these teachers were considered "non-regular" in 2011, meaning they were either hired directly by the schools on a yearly contract basis or obtained through temporary human resources companies. That number represents 36.8 percent of all private high school teachers, whereas the portion of public school teachers who are non-regular is 19.7 percent.
Furthermore, since 2001, the number of regular teachers in private high schools has decreased by more than 4,000, mainly the result of attrition through retirement, while the number of non-regular teachers has increased by 2,800. During the same period, the number of students attending private high schools has dropped by about 15 percent, while the number of private high schools hasn't changed.