Japan, why are you so stupid sometimes?

Sigh...

[and btw, "not a citizen" in this article means a Zainichi Korean, who... ah, screw it, here's Wikipedia:

Zainichi Koreans, also often known as Zainichi for short, who are the permanent ethnic Korean residents of Japan. The term "Zainichi Korean" refers only to long term, permanent residents of Japan who have retained either their Joseon (old, undivided Korea) or South Korean nationalities, not Korean-Japanese (Korean: 한국계 일본인/조선계 일본인, Hanja: 韓國系日本人/朝鮮系日本人, Japanese: 韓国系日本人/朝鮮系日本人), or ethnic Koreans who have acquired Japanese nationality through naturalization.]

Korean teacher sues over rules restricting promotion of non-citizens | Japan Probe:

"Just found this Hankyoreh article from October 28th about a public school teacher in Kobe who was stripped of a promotion because he was not a Japanese citizen:

…..the city’s educational commission has told him that a Korean who is not a Japanese citizen may not hold the position of “associate head teacher.” The school has also removed him from its school affairs committee and from his position as the vice chairperson of seven other school committees.

Kobe education officials and Han’s school are quoting 1991 Japanese Education Ministry guidelines that say a foreigner in Japan may only be promoted as high as a “full-time lecturer without time limit on appointment” who is entrusted only with “assisting” a Japanese teacher."

More: In Japan, S. Korean teachers push to gain recognition as full-fledged teachers : International : Home:

"...Kobe education officials and Han’s school are quoting 1991 Japanese Education Ministry guidelines that say a foreigner in Japan may only be promoted as high as a “full-time lecturer without time limit on appointment” who is entrusted only with “assisting” a Japanese teacher.

...In 1991, Korea and Japan signed a document called the “Memorandum on the Results of Agreement Based on the Pact on Korean and Japanese Legal Status,” and Japan soon started allowing the appointment of Korean citizen school teachers. The Japanese Education Ministry, however, without legal basis, drafted its own internal guidelines limiting citizens of foreign countries to the position of full-time lecturer. There are about 200 foreign citizen teachers in Japanese public schools today..."