I was wondering how the letter levels translate into grade levels. I am currently working with my kindergardener with Level B. Are we supposed to complete the book this year? Are the books designed to span 2 grades? Thanks!
Further to that... The grade designations listed above are the 'official' equivalents, but there is so much difference in Scope and Sequence between RS and standard math curricula that it really is just a rough guide.
Think of it as an 'average' -- many kids will be ahead of that schedule (my daughter who is not yet 5 is in level B), and other kids will be slower than that - we first came to RightStart when my son was 10, he had previously finished a grade 6 math program (and did well with it) but when we tried to move on it was obvious nothing had 'stuck'. So we put him in Level E, which by the grade equivalents was 2 grades below what he had already finished, and 1 grade below his chronological age too. But it was just right for him. Now he's 13 and doing well in pre-algebra so he's completely "caught up" to grade level.