Thoughts/Guidance sought....

[dfrecore]

If you're set on COSC, the easiest math that they'll accept is probably Sophia's Algebra. Unfortunately, they don't seem inclined to work out agreements with many ACE providers.

Also, does your son have at least 24 credits from an RA source? That requirement was added right around the same time as they dropped ALEKS.

Depending on what degree your son wants, Excelsior or waiting for TESU or UMPI may be better options.

I agree.  You may be trying to fit a square peg in a round hole here.  COSC has tightened up on what they'll accept these days, so it may not be a good fit for your son.  There's nothing wrong with that, as there are other options.

I strongly urge you to look at EC instead.  They seem to have dropped the $1095 enrollment fee, and so their pricing will be very similar to COSC's - yes a bit higher, but for someone who may not have 24cr of RA to bring in (and will have to take it for $1200 at ONU or $1600 at TEL), that just about offsets the difference in price.