Shelle and seven others took part in an intensive nine-week adult literacy program and changed their lives in the process.

The SBS documentary, Lost for Words, follows their journey.

The three-part series is described as an empowering and uplifting observational documentary that confronts Australia's staggeringly low adult literacy rate.

Shelle was diagnosed with dyslexia at the age of four and fell through the cracks at school.

Her parents helped Shelle with reading and writing and Shelle has fond memories of a teacher who devoted time to boost her maths and reading skills.

Shelle always loved reading but comprehension of the written word remained a struggle.

The years passed and Shelle got on with life. Then the SBS documentary, with its tailored classes, came along.

Shelle described the experience as "incredible".

"I got to meet people who had dyslexia or learning difficulties and I got to hear stories that were so similar to mine and also hear about achievements," she said.

"There was hardship, but at the same time, goals were reached."

Lead teacher Adam Nobilia, who designs and delivers education programs including literacy, numeracy and vocational skills, has worked with people with literacy struggles for more than a decade.

Teacher Jo Medlin, an adult literacy and numeracy specialist and advocate, has more than 25 years' experience in teaching and curriculum development.

Each of the participants took part in an individualised program based on their needs and goals and also embarked on challenging real-world tasks to put their new-found skills to the test.

Shelle said something just clicked inside her head during the classes.

"Those little moments where the lightbulb just went on were just incredible," she said.

"I am just so grateful for this program for giving me this chance."

Shelle continues to work on a fantasy novel, which she started as a teenager, but she has stopped worrying about the writing process as a result of the SBS documentary experience.

Actor, children's entertainer and literacy advocate Jay Laga'aia hosts the documentary.

Laga'aia said: "Lost for Words is an inspirational tale of how a bunch of strangers came together to face their fear of going back to the classroom.

"It documents their trials and tribulations. It's honest, raw, uncomfortable and challenging and you can't help but cheer for your favourite in the group, and at the end of this journey, a bunch of strangers become a family.

"They are brave beyond measure and they are you."

SBS head of documentaries Joseph Maxwell said this was an inspiring and uplifting series that shone a light on a huge issue within Australia.

"It showcases how great documentaries can be both deeply emotional as well as surprising and entertaining," he said.

Shelle encouraged people to watch the series.

"I think it will be heartwarming to watch us grow," she said.

Lost for Words launches launches at 8.30pm on September 22 on SBS and SBS On Demand.

People who want help with reading, writing or basic maths can contact The Reading Writing Hotline on 1300 6 555 06.

The Reading Writing Hotline is Australia's national telephone referral service for adult literacy and numeracy.

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