nrichard, I am not a teacher --well not in school -- and my parenting days have long gone. My answer to your question of "what would I expect your children to perform academically at school" is that Academia as "the accumulation of knowledge" would be replaced by a library or a data base or google.
The idea of "education" should be about the dynamic assessment and mediation of the cognitive tools and strategies and (dare I say it?) for the development of empathy and conscious pattern recognition ("meta"-aesthetics). This actually means that we "teach" (if one would call it that?) "understanding" instead of allowing a tiny overlooked few to somehow bootstrap understanding from the sheer volume of knowledge-based management work foisted upon the student (and these are NOT usually the top scorers!) .
School as we experience it would be gone because of its disastrous stratifying, exploitative and other sociopathic side effects on the rest of life. Years 8-12 would be replaced by an experientially based mentored system of individually directed learning (we have a crude shadow of this in the US Met Schools) but focussed on understanding across a general "curriculum" spread. K -7 would happen in the family/community (and that not as we know it --but some have experienced it a little) Education would be "learning about learning" and would result in "thinking about thinking" and would equip the student to be self taught. What we know now as teachers would become mentors with the capabilities of dynamically assessing the student's understanding and its cognitive skills and deficits --and then rectify them!
This system would not be providing grist for the employment mills but instead be focussed on the creative and productive skills for enterprises of cooperative self employment.
I have more information on my website which is still under construction but useable :
www.grokfest.com