Disgraced Jacqueline Millar, 36, engaged in several illicit encounters with the boy – including outside at a wooded area when he was underage – after she met him at a high school in the Lothians in 2021.

Millar, who was described in court as “a high flyer”, admitted repeatedly kissing and cuddling the lad and uttering sexual remarks towards him.

The shamed teacher also admitted sending the boy sexual messages on social media and by text.

The relationship was uncovered after Millar was forced to call 999 following a bust-up between the pair at her home in March last year.

The boy was taken into police custody following the incident and confided in a nurse that he and the teacher had been engaged in sexual activity for several months.

Millar, from Livingston, West Lothian, also pleaded guilty to engaging in sexual intercourse with the pupil over a seven-month period when she appeared in the dock at Edinburgh Sheriff Court.

Sheriff Derek O’Carroll told the offender that “all options to the court remain open” and deferred sentence to next month for background reports.

Prosecutor Susan Dickson told the court Millar started at the high school, which cannot be identified for legal reasons, as a teacher in philosophical, religious and moral studies July 2017.

She then moved to a separate department and was described in court as a “competent, knowledgable and dedicated professional”.She became involved with the pupil in 2020 – when he was just 14 – and the pair were said to have gone on walks together.

Ms Dickson said “concerns were raised” about the contact by teaching colleagues who believed she was putting herself in” a difficult position”.

The court was told the pair first kissed in Millar’s car after she had picked him up from football training in August 2021.

The boy said it was the teacher who initiated the kiss but Millar later claimed it was the lad who had kissed her first.

The fiscal depute said two weeks later Millar and the pupil drove to a wooded area in East Lothian where “she removed her clothes and sexual intercourse occurred” while he was under age.

The court was told the pair then “entered into a relationship” and they had sex together at her home “on a regular basis”.

Ms Dickson said Millar and the boy also had sex within a classroom at the school where she had “put paper over the windows” to avoid being seen.