Some background:
So far this year, our son finished 4th & 5th grade math using ALEKS, followed by passing the school's own end-of-year tests for each grade (90% and 97% respectively) to satisfy the district math requirements.
He was scheduled to begin the 6th grade math curriculum through EPGY on Dec 1, but because of the lag time, he started with the ALEKS program for 6th to keep himself busy during class. (His school allows him to do his math on-line during the normal math time for his class.)
He scored an 85% on the 6th grade initial assessment for ALEKS, worked for a couple of weeks to finish the remaining topics, and then scored 94% on the school's end-of-year test for 6th.
My question:
Is EPGY different enough from CA standards (and/or ALEKS) that he would truly benefit by re-taking 6th grade w/EPGY, or would he be fine starting out with Pre-algebra w/EPGY instead?
This is partly financial, in that I don't want to pay for the full 5th/6th grade EPGY course to maybe give him the benefit of just a fraction of the second half of that course, but I also don't want to put my son through the drudgery of the 6th grade EPGY curriculum if it is largely the same as ALEKS.
Any advice would be appreciated!