On February 17 episode of the new competition program, Mark appeared for the audition. He introduced himself as a student of Seoul School of Performing Arts and stated, "I'm participating because I want my once in a lifetime days in high school to be with rap and performance."

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After he finished his audition, Mark revealed why he didn't introduce himself as a member of the idol group NCT. He explained, "I wanted to audition for 'School Rapper' as a high schooler. I didn't' want people to have different perspectives (about me) when I name myself NCT so I wanted to appear as student Mark."

Watch student Mark's audition clip above.