A Bergen County teacher caught on video telling Spanish-speaking students to “speak American” has returned to the class.

Cliffside Park school officials say that teacher Laura Amico returned to work Tuesday with a formal apology to the staff and students.

Over 50 students walked out of Cliffside Park High School last week after Amico was caught on cellphone video telling her students that U.S. troops did not fight so that they could speak Spanish in class. Many of the students waved flags of their home countries during the walkout.

School officials say that Amico has been with the school district for 15 years.