LOS ANGELES — FBI agents raided the headquarters of the Los Angeles Unified School District and the home of its superintendent Wednesday, federal authorities said.

FBI officials said that the agency was executing search warrants at the school district and at the home of Superintendent Alberto Carvalho, but that the accompanying affidavits had been sealed by the court. They did not elaborate on the target of the investigation.

Carvalho did not immediately respond to a request for comment. Los Angeles Unified said in a statement that it was aware of the activity at Carvalho’s home and the district’s headquarters, and that it was cooperating with federal authorities.

It’s unclear what the FBI is investigating. The Los Angeles school district is home to about 400,000 students, and Carvalho, as superintendent, has one of the highest-profile jobs in K-12 education. He earns a salary of $440,000 a year.

Federal prosecutors had been looking into AllHere, a tech startup that had secured a $6 million contract with the Los Angeles school district for an AI chatbot but filed for bankruptcy in 2024.

The Trump administration also has had contentious relations in general with Los Angeles and California, where Democratic leaders have clashed with the administration’s hostility to diversity, equity and inclusion and have been among the president’s more vocal critics.

The Justice Department joined a federal lawsuit alleging that a longstanding desegregation program at Los Angeles Unified discriminated against white students. But that case is not a criminal case, and it would have been unlikely to have resulted in a search warrant targeting the home of the superintendent.

The superintendent has also clashed with federal authorities in the past over immigration enforcement efforts at school sites in Los Angeles Unified, which is the nation’s second-largest school district and the largest in California.

Last year, after Homeland Security Investigations agents were turned away from two Los Angeles elementary schools where they said they were conducting welfare checks on students without legal status, Carvalho condemned their actions at a news conference that drew national attention.

Explaining his impassioned response, Carvalho, a native of Portugal, said that as a young man, he had been on an overstayed visa for a time in this country as well.

Carvalho came to Los Angeles in 2022 after 14 years of leading the public school system in Miami. He is known as a strong supporter of immigrant students. Under his leadership, Los Angeles Unified demonstrated improvements in test scores and greater participation in Advanced Placement courses.

But his career has been marked by high-profile missteps. In Miami, leaked emails suggested that he had an inappropriate relationship with a reporter covering education. In 2018, he accepted a job leading the nation’s largest school system, in New York City, but then abruptly backed out on live television.

In Los Angeles, there have been persistent questions about how the district has awarded contracts.

In 2023, the district agreed to pay AllHere to develop an AI chatbot for students and parents. The company had little experience with AI and the software was glitchy. AllHere entered bankruptcy in 2024 and its CEO was later charged by the federal government with fraud.

Unionized teachers, who are currently embroiled in contract negotiations with the district and have authorized a strike absent an agreement, have taken issue in particular with Los Angeles Unified’s spending on outside contracts for tech.

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This article originally appeared in The New York Times.

By Shawn Hubler, Dana Goldstein and Sarah Mervosh/Philip Cheung
c. 2026 The New York Times Company