KANSAS CITY, Kan. (AP) — The U.S. Department of Education says it’s received four complaints about a northeast Kansas school district alleging improper barriers to enrolling children brought into the U.S. illegally.

The federal agency said Thursday the complaints received since 2011 involve USD 500 in Kansas City, Kansas. Details of the complaints, which are being investigated, were not disclosed.

The Kansas City, Kansas, district has about 17,000 students. Its offices were closed Thursday night.

No other Kansas districts were cited.

Federal officials issued new national guidance Thursday reminding schools of a 1982 U.S. Supreme Court ruling guaranteeing children brought into the country illegally the right to a K-12 education.

The officials said improper actions by districts in other states included requiring information about a child’s visa status or date of entry into the U.S.