My 5.5 year old is doing his kinder year right now, we are LOVING Rightstart Math, I highly recommend it! Even though level A is pretty basic it's a wonderful foundation and I'm impressed with how far we've come so far!
For reading I have just used Ordinary Parent's Guide to Teaching Reading and then as he is reading more and more we just practice reading real books! Dr Seuss, the leveled books from the library, etc. The Bob books weren't as great of a phonetic progression as I expected going in, they felt frustrating at times, so we did some Explode the Code workbooks and then just read a ton of real books!
For first grade I'm planning to start FLL/WWE as someone mentioned above but I decided to wait til then because it's more important to me that my son love learning than that he advance quickly-since I'M the one most excited by all these decisions! ;)
We're also using a humanities program called Tapestry of Grace (they have a K-1st level called Primer) that we are LOVING! We are diving in to learning the big picture of history and geography and it's my son's favorite part of school every day! I can't recommend it enough!