OOLOGAH, Oklahoma - A former Oologah High School teacher is under investigation after authorities say she had sex with a a student who was 17.

The Rogers County Sheriff's Office says deputies booked Haylie C. Smart into jail on Friday afternoon. Smart is charged with second-degree rape.

Court records say she had a sexual relationship with a student from the fall of 2017 to May 2018.

Oklahoma State Bureau of Investigation Special Agent Tammy Ferrari said investigators received a report on May 22 that Smart, 29, was having an inappropriate relationship with a male student of hers. Witnesses told OSBI that the two were openly affectionate at the school in front of others.

An affidavit of probable cause said Smart engaged in sexual intercourse with the student in her classroom on multiple occasions. In April, 2018, during the teacher walkout, the two also met at each other's home, records state.

Ferrari said the investigation showed phone calls between Smart and the student and that Smart had confided in a friend about the relationship. 

Max Tanner, Superintendent of Oologah-Talala School District, issued the following statement:

"The top priority of the Oologah-Talala School District is the health, safety and security of our students and staff. The School District previously employed Haylie Smart as a High School teacher.  Ms. Smart’s employment ended on May 29, 2018.  The Oologah-School District will not make any comment regarding Ms. Smart’s previous employment as personnel matters are confidential.  Moreover, the School District has no comment regarding any criminal matters regarding Ms. Smart."