We teach it in 3rd grade. Which is when most public schools do here. (Some do 4th)
My son knows tha basics but we dont force him to use it. Whatever works for him is fine.
Katie, mom to Olivia (97), Veda (98), Franky (2004), Wendy (2005), JoHannah (2007), Thea (2009) and Sunny (2011)