I haven't read the other posts... and I promise I won't tell you to have your child skip communion! We're Christian, but not Catholic, so I know some of the beliefs are a little different.
DD came to me last Easter (2010), and told me "Mommy, you eat that cracker and juice because you have Jesus in your heart, and Jesus died so we wouldn't be in trouble with God for being naughty. Jesus is in my heart, too, I asked Him this morning!" That was enough of a basic understanding of communion for my Pastor and I both to agree to letting her take communion.
Here was our line of thinking: (1) DD had made a confession of faith. While she doesn't fully understand what that means, I was baptised at 15yo and still didn't always "get it". (2) There's an age of accountability involved here. While some religions see a child taking communion as a terrible sin, I believe God sees her clear, innocent heart when she takes communion.
--Mimi
Mom to Lala (2004), Bonus Mom to Big Sis 1 (1991) and Big Sis 2 (1992)
Grammy to Big Kindy Kid (2011), Big Pre-K Kid (2012),
Grandbaby Appendage (2014), and New Baby Grandboy (summer 2017)