Firstly, in order to promote a one-room schoolhouse environment, where you don't have to rush off to three different curriculum files for three different grades, we prescribe one set of material for three levels.
The difference between each level rests upon two factors:
a) How much the child absorbs and understands the material
b) How much the child is able to DO with the information learned: (e.g. Analysis, Synthesis, Comparison, Short Essay Writing etc.)
Expanding this concept then...
The Grade 1 child will interact with the material at his Grade 1 level, the Grade 2 will absorb more of it and the Grade 3 will be able to absorb it, draw parallels, analyse it and re-synthesize the material in his own mind and own words. Secondly, the output expected from a Grade 1 is much simpler than that required from a Grade 3. A Grade 1 should simply draw a picture of what they have learned. (Half way through the Grade 1 year they can begin writing a suitable heading for their picture, using the phonics learned).
The Grade 2 child will write a heading for the picture right from the beginning of the year and will begin labelling the drawing... (e.g. parts of a plant, the apparatus required for a science experiment etc). The Grade 2 will work up to writing three to four sentences about their piece of work, by mid year.
The Grade 3 child will begin writing one or two sentences at the beginning of the year (this is if they are new to Love2Learn and not accustomed to writing three to four sentences.) By the end of the first term of Grade 3, he should write at least two sentences if not more. By mid-year he should work up to four sentences, and by the end of Grade 3, he should be very comfortable writing at least half a page of hisown notes. (Not dictated by you! It is a written version of Narration).