World Down Syndrome Day

World Down Syndrome Day – annually on March 21st – is officially ratified by the United Nations. It allows communities around the world to recognize and celebrate contributions from people with Down syndrome.


World Down Syndrome Day (WDSD) is March 21, 2021.  We encourage raising awareness about Down syndrome in your school and in the community and we appreciate your support.

The Canadian Down Syndrome Society has developed a WDSD Celebration Kit, and we have some great tools for your classroom, community, or event!

  • Wear #LotsOfSocks!

Ask your students to wear colorful, fun socks on WDSD, it helps to raise awareness and puts some fun into the celebrations!

  • Share your celebrations!

Share your group pics with us at @CdnDownSyndrome on Twitter, Instagram and Facebook.  Use #SeeTheAbility #WDSD #WorldDownSyndromeDay
Please respect privacy when sharing images, especially photos with minors. Please follow your school or groups approval policies prior to sharing on social media.

  • Share amongst your community!

Ask a self-advocate role model in your community to present to your group or class in-person or virtually. Talk to local newspapers or local media personalities!

  • Look for Lights!

On March 21, keep your eyes open for landmarks around the city and across the country that are lit up in blue and yellow to recognize this important day.

If you would like to make a lighting request in your community, reach out to and we could help you make the request.

Tag and share photos of lights with #WDSD #LotsOfLights


World Down Syndrome Day Celebration Kits

Tools for your classroom, community and events

The Canadian Down Syndrome Society wants to help you teach and talk about Down syndrome on World Down Syndrome Day (WDSD), March 21!

World Down Syndrome Day falls on Sunday March 21 this year, but we want to encourage classrooms and groups to celebrate WDSD on the days leading up to it!

The WDSD Celebration Kit is available for FREE as a digital download can be printed and used however works best for your classroom, community group, workplace, team etc.!

The WDSD Celebration Kits includes:

 Teaching Plan

This will help you lead a discussion focusing on awareness, acceptance and celebrating Down syndrome in the classroom and the community. Our teaching plan includes classroom and individual activities and includes printable handouts. (Duration approx. 45-60 minutes)

“About Down Syndrome” Presentation

A great resource for WDSD and throughout the year to learn about Down syndrome and how we are more alike than we are different! (Duration approx. 10 minutes)

DOWNLOAD Adobe Acrobat PDF version 3MB
DOWNLOAD PowerPoint version 160MB

FRENCH DOWNLOAD Adobe Acrobat PDF version 3MB
FRENCH DOWNLOAD PowerPoint version 160MB


All posters are printer friendly from a home or small office printer.  If you would like to professionally produce these posters and require a high resolution file, please email us at

“World Down Syndrome Day Join Us!” poster for you to personalize with your event details.

“La Journee mondiale de la trisomie 21” poster

“See the Ability” general awareness poster

“Voir le potential poster

“Let’s Talk About Down Syndrome”
Informational poster – DOWNLOAD
Handout version 8.5”X11” – DOWNLOAD


Both videos are a great tool to help show understanding and accepting friendships.  Please view each to see which one is more appropriate for your students.

“Just Like You” (Duration 3 minute short version)

“My Friend Isabelle” ( Duration 4 minute video)

2021 World Down Syndrome Day Swag Update:

Due to Covid-19 concerns and safety measures, CDSS will not be mailing swag items such as stickers and tattoos as part of World Down Syndrome Day celebrations in 2021.

You can still download and print the free resources we have available online – see this page for details!

Many schools and groups were supplied CDSS tattoos and stickers in 2020 and did not have the opportunity to use them due to COVID restrictions and lack of face-to-face activities. If you have opportunity to use these in 2021, or for other programming, we encourage you to do so.

Thank you from the Canadian Down Syndrome Society for participating, helping to build awareness and celebrating World Down Syndrome Day 2021!


Go21 is an empowering celebration of positive momentum for the Down syndrome community in Canada and beyond.

Canadian Down Syndrome Week

CDSS supports events and activities across Canada that promote Down syndrome awareness and collaboration.

Down Syndrome Conference

In place of a multi-day conference in 2021, CDSS will be coordinating single day presentations and workshops. Dates and locations are still being coordinated for 2021. Please stay tuned to social media for details, and/or subscribe to our e-newsletter and 3.21 magazine online.