The teenager took online ASU courses which he paused to stand trial for killing two men and injuring another during protests in Kenosha, Wisconsin.
Rittenhouse, 18, was acquitted of all charges against him after killing Joseph Rosenbaum and Anthony Huber and injuring Gaige Grosskreutz in August 202.
During the trial, Rittenhosue said he had studied nursing at ASU.
The university has clarified that he was enrolled as an online non-degree-seeking student and did not take lessons on the Tempe campus.
“Kyle Rittenhouse has not gone through the admissions process with Arizona State University and is not enrolled in Edson College of Nursing and Health Innovation,” said university spokesman Jay Thorne Republic of Arizona.
The college said the teenager had signed up for a program for students to “start taking lessons as they prepare to apply for admission to a university degree program.”
Mr Rittenhouse said in a NewsNation interview that he wanted to “re-register” in classes next semester and pursue a career in nursing.
He was asked by host Ashleigh Banfield if he thought it would be possible to be a student on campus with his high-profile profile.
“I hope so because I just want to be a normal 18-year-old college student trying to improve my future and get into a nursing career,” he said.
During the interview, he also said that he would reject all offers to become a congressional intern following offers from Republicans such as Matt Gaetz, Paul Gosar and Madison Cawthorn.
“I do not want to get involved in politics at all. I know nothing about it and thank everyone for their support. But I’m fine, thank you, he said.