A distraught mother claims her disabled son was beaten up at school after a teacher failed to stop him being bullied.

Valerie Ann Lozano, from San Antonio, said her son was in PE class at Resnik Middle School on Thursday when another student told the boy he was going to fight him after school.

She claims her son told his PE teacher about the threat, and the instructor told the boy 'Don’t worry, I got you'.

But, she wrote on Facebook, the offer of help never materialized and her son was beaten bloody later the same day.

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Valerie Ann Lozano, from San Antonio, said her son was threatened by another student in P.E. class and told his coach, who responded: 'Don't worry, I got you'

Ms Lozano said the offer of help never materialized and her son was beaten bloody later the same day. She uploaded these images of his injuries to Facebook

Ms Lozano told local media that her son suffers from disabilities, has anxiety and depression, and since the attack has been unable to sleep.

Gruesome pictures posted to Facebook by Ms Lozano shows what she says is the aftermath of the brawl.

The images, uploaded on Tuesday, show a large amount of blood spattered across the floor.

In one of the images her son can be seen sitting down on the ground with no shoes on while medics tend to him.

There also appears to be a police officer taking notes next to the boy.

Ms Lozano said that, adding further insult to injury, she had a meeting with the school principal the following day which the coach was supposed to attend.

But despite being summoned to the office the teacher was a no-show, she says.

Ms Lozano said the coach never attended a meeting she had with the principal and that school district officials have not been returning her calls

Ms Lozano said she has also been calling school district officials but they have not been returning her calls.

'I want this to go viral so something can be done. Please share this post,' she wrote.

Since then the images have been shared more than 200,000 times and were picked up by local news station KSAT.

When the station contacted the school district they were given a statement which reads: “On Thursday, January 25, around 3 p.m., two students engaged in a mutual altercation that was immediately stopped by a police officer.

'Due to Family Educational Rights and Privacy Act, we cannot disclose disciplinary actions taken against the students, but we can say both parties did comply with the officer's directives.

'We are in the beginning phases of the investigation and we are getting statements from students and teachers.'