A teacher is facing four years jail after she was caught having sex with a 15-year-old boy she was tutoring privately. 

Natalya Nikandrova was caught by the boy's mother performing a sex act on the teenager at his home in St Petersburg, Russia.

The 35-year-old teacher, who was friends with the mum, had been taken on to teach the boy at his home, reports the Daily Mail.

According to local media, the teenager comes from a wealthy family.

He often posts photos of himself on social media with beautiful women, and expensive cars.

His father, an oil tycoon, and mother decided to have him home-educated with some of the best teachers in the city. 

But after taking on a family friend, the horrified mum walked in to find the woman seducing her son.

A police spokesman said: 'The suspect started seducing her pupil and it was her initiative.

'The lesson ended with sexual activity with a person under the age of 16.

'The teacher has been charged and the case will be forwarded to the Moscow District Court.'

Shocked readers flooded social media, describing her behavior as both 'jaw-dropping' and 'enviable'. 

Katya Kroshkina wrote: 'I think the mother had the jaw-dropping moment of her life when she saw their lesson.'

And Irina Krutova fumed: 'I would tear out all of hair if I saw her giving my underage son a [sex act].'

But Dmitriy Dmitriy posted: 'I wish I had such a teacher like her when I was 15.'

While Boris Evseev commented: 'I'm sure everyone involved in the investigation secretly envies the lad, at least I do.'

The teacher was arrested for having sexual relations with a minor and now faces four years in jail.