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All rights reserved. * Shows + Good Morning America Good Morning America + World News Tonight World News Tonight + Nightline Nightline + 20/20 20/20 + This Week This Week * Live * Video Little Sister Defends Her Brother With Autism After Student Called Him 'Weird' * By JOI-MARIE MCKENZIE Close Follow on Twitter More from Joi-marie Nov 5, 2016, 3:52 PM ET * 0 Shares * * * * Email * Star PHOTO: Sophie Camilleris daughter Lex, 6, stood up for her brother Frank, 9, who has autism, after a student at her school called him weird. Courtesy Sophie Camilleri Sophie Camilleri's daughter Lex, 6, stood up for her brother Frank, 9, who has autism, after a student at her school called him weird. * 0 Shares * * * * Email When a student in her class made fun of her older brother, who has autism, one 6-year-old couldn't stand idly by. Instead, she wrote a letter to the school, requesting that students learn about invisible disabilities. Lex Camilleri took that letter to the school's student council and later read it aloud to her class before having a discussion about autism and what it means. Lex's mother, Sophie, was informed of the letter by a teacher who approached her after school. That's when she posted it to Facebook and the handwritten letter quickly went viral. In the note, Camilleri wrote: "On Monday I felt very sad because a girl in my class said that my brother was weird. My brother has autism and is not weird. I would like it if we could learn about all disabilities in schools so that everybody understands that some people are different, but we should all be treated the same." 9-Year-Old Explains Her Autism During School's Morning Announcements 12-Year-Old Girl's Sister on Autism Spectrum Inspires Her and Friends to Develop App British mother of three Sophie Camilleri, 44, said she's "so proud" of the way her daughter handled the situation. "Frank is older than her and that's all she's ever known," the mother added. "She's only known autism so she doesn't see it as different. She's lived and breathed in from the beginning. That's just how it is." PHOTO: Sophie Camilleris daughter Lex, 6, stood up for her brother Frank, 9, who has autism, after a student at her school called him weird. Courtesy Sophie Camilleri Sophie Camilleri's daughter Lex, 6, stood up for her brother Frank, 9, who has autism, after a student at her school called him weird. Camilleri recalled that a teacher described what happened after Lex read her letter aloud. The teacher asked the students if anyone knew what autism was and "not one child knew what it was. This is why she wants it out there and taught more in schools." The family hopes to take their request all the way up to their member of Parliament to see if it can be taught in schools country wide. "We need to educate children, as young as nursery, to discuss disabilities that aren't so visible like autism, dyslexia and people that may have a hearing impediment just so that children are aware and so children can understand it," Sophie Camilleri added. Lisa Goring, the chief programming and marketing officer at autism advocacy organization Autism Speaks, told ABC News in a statement that increased understanding of autism is needed in U.S. schools. "With an estimated 1 in 68 [U.S.] children diagnosed with autism, the need for acceptance and understanding for people with autism is vital," the statement read. "Many schools do provide information about autism, but we know that this is not done in all schools. To further the acceptance and understanding, Autism Speaks provides a School Community Tool Kit to help those in the school community support students with autism. We also have a tool kit specifically for elementary school children to learn more about autism." * 0 Shares * * * * Email * Star Comments " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Little Sister Defends Her Brother With Autism After Student Called Him 'Weird' " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Trump Said He Felt He Was Going to Lose the Election, Despite Denying It " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] 4 Dead from Suspected Pesticide Poisoning at Texas Home " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Family Sues Apple, Claims FaceTime Distracted Driver in Fatal Crash Democrats Extol Health Care Law in Bid to Derail GOP Repeal 10-Month-Old Revived Twice After Being Exposed to Fentanyl " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Retired Marine With Double Arm Transplant Wiggles Fingers " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Year-Long Digital Detox Left Woman Feeling 'Grateful of Every Moment' " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Last Dog Adopted During Shelter Clear-Out Gets Sweet Sendoff " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Parents Outraged Over Alleged Hatchimal Toy Fails " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Dylann Roof Faces Sentencing in Federal Death Penalty Case Pope to Bishops: Maintain 'Zero Tolerance' for Child Abuse " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] For Trump, the 1980s Still Hold Relevance Federal Prosecutor Tackles Heroin Scourge That Claimed Son 3 Released in Dakota Access Pipeline Stadium Protest Israeli Police Question Netanyahu Over Corruption Allegation " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Queen Elizabeth II Misses Church Again, Raising Health Concerns " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Dick Clark Productions Rejects Mariah Carey's Sabotage Claim " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] What Happened During Mariah Carey's New Year's Performance " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Lauren Conrad Is Pregnant Kremlin Visit for Children of Diplomats Expelled by US " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Time Lapse of Rolling Smog Gives Glimpse of Beijing's Pollution Problem " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] 'Bachelor' 'Definitely Remembers' One-Night Stand With Contestant " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] Injured Dog Stranded on Train Tracks Is Protected by Furry Friend " [HT-autisim-letter-1-jt-161105_v4x3_4x3_992.jpg] How Celebrities Rang in 2017