Rapper 6ix9ine, currently in the middle of sentencing proceedings after pleading guilty in a child sex case, may face prison for something far less disturbing than uploading a video of a 13-year-old child engaging in sex acts—failing his GED.

As part of his plea deal in the fall of 2015, Jezebel reports the "Gummo" rapper agreed to complete his GED. On Tuesday, he admitted he hadn't yet done so in the past two-plus years, despite potentially facing between one and three years behind bars if he fails to meet the terms of his plea agreement.

According to Jezebel, 6ix9ine told the judge that he had passed every section of the GED except for science. Judge Felicia Mennin delayed proceedings until April 10, but warned the rapper that if he doesn't pass the test by then, he may end up in prison.

6ix9ine's plea, for "the use of a child in a sexual performance," dates back to an incident in February of 2015. The rapper was at an apartment in Harlem with several other men (one, Taquan Anderson, was charged separately), who invited a 13-year-old girl over. She was videotaped performing oral sex on Anderson while 6ix9ine "stands behind the child making a thrusting motion with his pelvis and smacking her on her buttocks."

In addition to obtaining his GED, the other conditions of the rapper's deal included one year of interim probation, two years of mental health treatment, 300 hours of community service, a prohibition on posting sexually explicit or violent images featuring women or children on social media, and a requirement to write a letter to the victim's family.