This was a beautifully told story that anyone can appreciate, but those parents of children with special needs will find particularly emotional viewing. It conveys the challenges well, and treats a sensitive subject with great tenderness. It's also a reminder that the world has come a very long way in a relatively short period of time when it comes to acceptance, but - and this is not related to the movie - it's worth noting that over 80% of those with Down Syndrome are terminated prior to birth. So perhaps we're not that 'inclusive' after all.
I pre-screened this before suggesting it to my wife, but decided against suggesting it after all. It would feel too raw. So be warned, if you have a child with DS or similar, this is a beautiful movie but may tug at your heart strings too deeply for comfort.