I have an untested, likely-gifted, homeschooled kindergartener (just turned 6). We have been using using Rightstart, and are half way through B, and my DD and I are just flat out bored. She is easily ready for multiplication, division, and subtraction with borrowing 3 and 4 digits, but Rightstart will not get in to that for at least another year, possibly two. I love Rightstart and thought we would just push through, but we have a hard time getting motivated (because neither of us want to do things she already knows) with her interests getting further and further beyond the curriculum. We are looking to go to something else that will move significantly faster and also be more challenging. I am thinking about singapore, or trying to just teach her on my own and push her up a grade to be ready for beast academy. I have no experience with either of these I just know that they are well recommended. If anyone has any experience with this problem with rightstart, or can offer any advice I would love to hear it.