A judge yesterday upheld hate-crime charges against a college student accused of slashing a taxi driver’s neck in an anti-Muslim attack that amplified concerns about tolerance shortly before the anniversary of the Sept. 11 terror attacks.

Manhattan state Supreme Court Justice Richard Carruthers said a grand jury had had enough evidence to indict Michael Enright. The judge said he planned to set a later trial date on March 30.

Enright, a 22-year-old film student, has pleaded not guilty to attempted murder and assault as hate crimes in the Aug. 24 stabbing.

Enright asked driver Ahmed Sharif whether he was Muslim, uttered an Arabic greeting and told him to “consider this a checkpoint” before cutting him with a folding knife, prosecutors said.

After his arrest, Enright declared himself “a patriot” and told cops, “You allow them to blow up buildings in this country,” according to authorities.