Gordon Caplan, the former co-chairman of Willkie, Farr & Gallagher, was sentenced to one month in federal prison on Thursday for paying a college admissions consultant to rig his daughter’s ACT score.

U.S. District Judge Indira Talwani in Boston said the interests of general deterrence drove the need for Caplan to serve time behind bars. The sentence was below the eight months prosecutors asked for, but dashed Caplan’s hopes for a noncustodial sentence.