
An athletic trainer for McKinney ISD has been arrested after police say she carried on an inappropriate sexual relationship with a student, a case that now has both criminal investigators and school regulators digging in.
Public booking records list the suspect as 35-year-old Lindsey Post, who was booked into the Collin County Jail on felony charges involving a juvenile. District officials say Post has been placed on administrative leave while law enforcement and child-protection agencies investigate.
Arrest And Charges
According to Collin County online booking records, Post faces counts of sexual assault of a child and improper relationship between an educator and a student, as reported by CBS 11. Police say the arrest followed a report that flagged a relationship between the student and the employee.
Bond information had not been released as of yesterday, and it was not immediately clear whether Post had retained an attorney, according to CBS 11.
Family Attorney Alleges Repeated Assaults
The student’s family has turned to Dallas attorney Paul Herz, who says the case goes far beyond a single incident. Herz told reporters the freshman endured “multiple instances of rape that began last fall” and characterized the allegation as “a violent sexual offense.”
At a news conference Wednesday, Herz said the family contacted police as soon as they learned the details, according to The Dallas Morning News.
District Response And Staff Role
McKinney ISD told parents it was notified Tuesday about alleged inappropriate conduct and text messages involving the staff member and a student. The district reported the allegation to the Texas Education Agency, the Texas Department of Family and Protective Services and the McKinney Police Department, in line with state reporting rules, according to The Dallas Morning News.
The district’s Sports Medicine page lists Lindsey Post as an athletic trainer assigned to McKinney North High School, confirming her role on that campus. In messages to families, school leaders said student safety remains their top priority while investigators sort through the allegations.
Legal Implications
Under Texas law, “improper relationship between educator and student” is a second-degree felony that can carry significant prison time if there is a conviction. Prosecutors can move forward with criminal charges while the State Board for Educator Certification reviews an educator’s credentials; the statute is outlined in Texas Penal Code §21.12.
Guidance from the Texas Education Agency explains that districts must report alleged educator misconduct to TEA and to child-welfare authorities. Those reports can trigger separate licensing and child-protection reviews that run alongside any criminal case. Prosecutors have not indicated whether they are considering additional charges as the investigation continues.
What Happens Next
McKinney police say the investigation remains active, and no schedule for additional charging decisions or initial court appearances has been released.
The family’s civil attorney has signaled an intent to pursue potential civil liability while criminal investigators continue their work. McKinney ISD has said it will cooperate with all agencies involved as the case moves forward.









