Jayru Campbell, 17, appeared via video in 36th District Court.
Campbell is charged with felony assault and a misdemeanor charge of aggravated assault.
He pleaded not guilty. His bond was set at $5,000 or 10 percent.
He also has been suspended from the school.
Outside court, defense attorney Jeffrey Edison said Campbell regrets what happened.
"Mr. Campbell is a very compassionate young man. He's obviously concerned about what happened that day," said Edison.
Edison said the Jan. 22 confrontation between the student and the guard "should not be criminalized." He doesn't agree with the charges.
"When you look at all the circumstances of that day, it certainly is our position that Mr. Campbell should not be criminalized," he said.
Video shows Campbell allegedly picking up the guard and slamming him to the floor.
The guard suffered injuries to his face and head.
Read back: Jayru Campbell charged
The junior is considered one of the top high school quarterbacks in Michigan and has said he will play for Michigan State University in 2015.
He led Cass Tech to state championships in 2011 and 2012.
Copyright 2014 by ClickOnDetroit.com. The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.