LITTLETON, Colo. — A student returned to school yesterday after the American Civil Liberties Union threatened a lawsuit over his suspension for posting critical comments about his school on MySpace.com.

Littleton High School officials called the posting disruptive to the educational process and suspended Bryan Lopez, 16, on Feb. 10, according to the Rocky Mountain News. The ACLU threatened to file a lawsuit saying Lopez’s suspension was a violation of his First Amendment rights.

As part of its agreement reached on Feb. 20 that allows Lopez back in school, the ACLU agreed not to file its lawsuit while the school said it would remove any record of a suspension from Lopez’s record, according to the ACLU.

The ACLU said Lopez’s posting was a satirical comment on the poor physical condition of the school, the behavior and demographics of students and staff, lack of resources and the perceived racial biases of teachers and administrators.

Lopez was suspended for five days, but officials then added another 10 days as they mulled over expelling him.

The ACLU said Lopez used his home computer to post the message, which wasn’t viewable on school computers because of filters, and it was available only to those with a password given out by Lopez.

School district officials did not immediately return a message left by the Associated Press.