In the UK, my understanding is that a child in a Kindergarten-age 4 would do Reception. Their Year 1 in school is for 5yo’s, so that is Year 1 MEP math for 5yo’s. That said, I think that Reception goes well for a US K year, and Year 1 MEP is good for Grade 1, etc. MEP is challenging.
If you complete MEP year 6, with the child fully understanding and doing very well with it, they should be ready for Algebra. However, if they are having a hard time with it, even though they complete it – you would want to look at MEP years 7-9 which is more of a pre-algebra, middle school type program. (MEP Years 7-9 are not a direct continuation of MEP Years 1-6…. I’ve heard that MEP Year 7 is a similar difficulty as MEP Year 4 or 5….)
BTW – as far as if you are at the right “spot” or not – the only right “spot” is where the student is challenged, but not too much – and is learning.
Are you a member of the MEP Homeschoolers Yahoo Group?