Who Is Heather Mashburn-Smith? Port Charlotte High School Teacher Arrest

Heather Mashburn-Smith is a former Port Charlotte High School teacher in Florida who was arrested in April 2026 after authorities said she had sex with a 17-year-old student twice on the school campus. Mashburn-Smith later pleaded guilty to sexual assault by a custodian. On August 25, 2026, she was sentenced to seven years in state prison followed by 15 years of sex-offender probation. She was also adjudicated a sexual predator and permanently surrendered her teaching certificate.

Heather Mashburn-Smith Arrest

Mashburn-Smith Was Arrested On April 29, 2026. Detectives with the Charlotte County Sheriff’s Office Major Crimes Unit began investigating after receiving information about possible unlawful sexual activity involving a Port Charlotte High School teacher and student. Investigators subsequently arrested Mashburn-Smith. [Charlotte County Sheriff]

The Student Was 17 Years Old. The sheriff’s office said Mashburn-Smith had sexual intercourse with the teenage student on two occasions during the month before her arrest. [Charlotte County Sheriff]

Both Alleged Sexual Encounters Happened On School Property. Authorities said the encounters occurred at Port Charlotte High School, where Mashburn-Smith worked as a teacher. [CBS12]

Snapchat Messages

The Relationship Allegedly Began Through A Snapchat Group Chat. According to the sheriff’s affidavit, the student said he and Mashburn-Smith initially communicated in a Snapchat group. He later sent a message telling her she was pretty. [Gulf Coast News]

Mashburn-Smith Allegedly Asked The Student What He Meant By Calling Her Pretty. Court records say she subsequently messaged him about the compliment, and their communications became increasingly personal. [Gulf Coast News]

Mashburn-Smith Invited The Student To Her Classroom To Discuss The Messages. The student told investigators that he visited the classroom multiple times before the relationship became physical. [Gulf Coast News]

Sexual Encounters In The Classroom

The Student Said He And Mashburn-Smith Initially Kissed In Her Classroom. According to the affidavit, the relationship escalated after several visits to her classroom. [Gulf Coast News]

Mashburn-Smith Told The Student Not To Tell Anyone About The Relationship. The student told deputies that she instructed him to keep what was happening between them secret. [Gulf Coast News]

The Two Had Sex Twice In The Classroom. Court records and the sheriff’s investigation say the sexual encounters occurred on two separate occasions at Port Charlotte High School. [Charlotte County Sheriff] [Gulf Coast News]

Mashburn-Smith Allegedly Discussed Leaving Her Husband

The Student Said Mashburn-Smith Told Him She Was Unhappy In Her Marriage. According to the affidavit, Mashburn-Smith allegedly told the teenager she was not in a good marriage. [Gulf Coast News]

She Allegedly Said She Wanted To Leave Her Husband For The Student After He Turned 18. The teenager provided that account to investigators during the criminal investigation. [Gulf Coast News]

The Student Eventually Blocked Mashburn-Smith On Snapchat. Court records say he attempted to end the communications by blocking her account. [Gulf Coast News]

Mashburn-Smith Continued Trying To Contact Him. Investigators said she continued reaching out through Snapchat even after the student blocked her. [Gulf Coast News]

Mashburn-Smith Confesses To Detectives

Authorities Say Mashburn-Smith Gave A Full Post-Miranda Confession. The Charlotte County Sheriff’s Office said she admitted the unlawful sexual activity after detectives advised her of her constitutional rights. [Charlotte County Sheriff]

Bodycam Footage Shows Mashburn-Smith Walking Deputies Through Her Classroom. Footage released months after the arrest shows her explaining to investigators where the sexual encounters occurred. [Gulf Coast News]

Mashburn-Smith Pointed Out The Area Where She And The Student Had Sex. During the recorded walkthrough, investigators asked her to identify where the sexual activity occurred and she showed them locations inside the classroom. [Us Weekly]

Criminal Charge

Mashburn-Smith Was Initially Charged With Unlawful Activity With Certain Minors. The sheriff’s office charged her under Florida Statute 794.05. Because she was a teacher and the alleged victim was her student, authorities said the offense was enhanced to a first-degree felony. [Charlotte County Sheriff]

She Was Ultimately Convicted Of Sexual Assault By A Custodian. Court records show Mashburn-Smith entered a guilty plea to sexual assault by a custodian under Florida law. [WWSB]

Port Charlotte High School Response

Mashburn-Smith Was Placed On Administrative Leave After Her Arrest. Charlotte County Public Schools Superintendent Mark Vianello said the conduct described by investigators violated the responsibilities educators owe students and families. [Charlotte County Sheriff]

The District Said Student Safety Was Its Priority. School officials said they were cooperating with law enforcement while pursuing disciplinary action against Mashburn-Smith. [Charlotte County Sheriff]

Heather Mashburn-Smith Pleads Guilty

Mashburn-Smith Pleaded Guilty On August 25, 2026. Court records show she entered the plea in the Twentieth Judicial Circuit in Charlotte County. [WWSB]

The Court Adjudicated Mashburn-Smith Guilty. Unlike a case in which adjudication is withheld, the judgment formally adjudicated her guilty of the offense. [WWSB]

Seven-Year Prison Sentence

Mashburn-Smith Was Sentenced To Seven Years In State Prison. The judge ordered her to serve seven years in the custody of the Florida Department of Corrections. [WWSB] [Gulf Coast News]

Mashburn-Smith Received Credit For 118 Days Already Served. The sentencing judgment credited her with time spent in custody before the sentence was imposed. [WWSB]

She Will Serve 15 Years Of Sex-Offender Probation After Prison. The probation term will begin following her release from state custody. [Gulf Coast News]

Mashburn-Smith Declared A Sexual Predator

The Court Adjudicated Mashburn-Smith A Sexual Predator. Her sentencing judgment includes a sexual-predator designation under Florida law. [WWSB]

Mashburn-Smith Was Ordered To Have No Contact With The Victim Or His Family. The restriction is part of the conditions imposed in the criminal case. [Gulf Coast News]

Teaching Certificate Surrendered

Mashburn-Smith Must Permanently Surrender Her Teaching Certificate. The sentence requires her to give up her Florida educator credentials. [Gulf Coast News]

She Is Barred From Reapplying For A Teaching Certificate. The prohibition prevents her from seeking reinstatement of the credential after completing her prison sentence or probation. [Gulf Coast News]

Case Status

Mashburn-Smith Is Now A Convicted Defendant Rather Than An Accused Teacher Awaiting Trial. The August 25 guilty plea and judgment resolved the primary criminal case and resulted in a seven-year state-prison sentence. [WWSB]

She Faces Years Of Court Supervision After Her Release. In addition to seven years in prison, Mashburn-Smith must complete 15 years of sex-offender probation and comply with the conditions associated with her sexual-predator designation. [Gulf Coast News]