Terell Armstead pleaded guilty to conspiring to distribute 100 grams or more of heroin within 1,000 feet of a school. The district court 1 accepted without objection *555 the presentence report’s Sentencing Guidelines calculations (which included an offense level increase for role in the offense), departed upward because the offense conduct caused serious injury to another person, and sentenced Mr. Armstead at the bottom of the revised Guidelines range to 235 months in prison. He appeals. His counsel has moved to withdraw and filed a brief under Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967); Mr. Armstead has filed a pro se supplemental brief.

With respect to issues raised in counsel’s brief, we conclude that no violation of Federal Rule of Criminal Procedure 11 occurred; and that the district court did not abuse its discretion in imposing the sentence, see Gall v. United States, 552 U.S. 38, 51, 128 S.Ct. 586, 169 L.Ed.2d 445 (2007) (standard of review). We decline to consider any ineffective-assistance issue in this direct appeal. See United States v. McAdory, 501 F.3d 868, 872-73 (8th Cir. 2007) (appellate court ordinarily defers ineffective-assistance claim to 28 U.S.C. § 2255 proceedings). We also reject the pro se arguments. First, Mr. Armstead was convicted of only one offense, the count to which he pleaded guilty. Second, both in his plea agreement and at his plea hearing, he indicated he understood that no promise had been made regarding his Guidelines range. Third, even if the drug quantity directly involving a protected location was less than the total drug quantity involved in the offense, the greater of the base offense levels under the two relevant subsections must be applied in calculating the Guidelines range. See U.S.S.G. § 2D1.2(a)(1), (a)(2). Last, Mr. Armstead had an opportunity to challenge the sentencing enhancements, but he agreed in his plea agreement that the serious-injury enhancement would apply, and he withdrew his initial objection to the role enhancement.

Accordingly, we affirm the judgment of the district court, and we grant counsel’s motion to withdraw, subject to counsel informing appellant about procedures for seeking rehearing or filing a petition for certiorari.