A former Cedar Rapids substitute teacher is now facing a more serious felony charge for her sexual relationship with a student due, in part, to TV interviews since her arrest.

Mary Beth Haglin now faces a felony charge of Sexual Exploitation, which carries a possible sentence of up to five years in prison. She had faced a lesser charger of sexual exploitation by a school employee.

In an interview with KCRG-TV9, Haglin admitted to having an affair with one of her students while she taught at Cedar Rapids Washington High School during the 2015-16 school year.

Since her arrest, Haglin has done interviews with national outlets, including the Dr. Phil show, regarding her alleged crime.

In court documents, Linn County Prosecutors cite those interviews as providing evidence for the more serious charge.

"The defendant has participated in a series of public interviews in which she admitted engaging in a pattern or practice of sexual conduct with a student while employed as a teacher at Washington High School which supports the more serious felony offense," the motion to amend charges reads.

Haglin is scheduled to enter a plea to the new charge on November 4th. She previously pleaded not guilty to the original charge.

Haglin's case resulted in an internal investigation by the Cedar Rapids School District. That investigation was never made public, however the district said it would implement stricter training requirements for administrators as a result of what happened.

According to the Cedar Rapids School District, Washington High School administrators first learned of the potential affair in February 2016. At that time, administrators investigated but found no direct evidence of a relationship between Haglin and the student. In May, the district said new evidence surfaced that confirmed the relationship and Haglin was dismissed from her substitute teaching role.

However, emails obtained by KCRG-TV9 show Washington High School staff did not notify the agency that coordinates substitute teachers for the area of the reason Haglin was dismissed. Instead, an email said Haglin was no longer needed because a different schedule had been arranged to cover her classes.

As a result, Haglin was able to sub again in the district in June. At that time, the district office became aware of the allegations against Haglin. The district dismissed her, notified the substitute agency and contacted police.

Three administrators in the district have retired due to the Haglin case. Washington principal Ralph Plagman, Activities Director Mike Johnson and Human Resources Director Jill Cirivello all signed an agreement with the district admitting no guilt in the matter.