As far as weighting - all the reading I have done on the subject seems to suggest that it prety much evens out.
As for size of the students - mine has shoot up so much over the past year that he almost (almost) looks like a junior...
Another option - my kid's middle school has been approached by a local test prep company (Sylvan???)about an interesting idea.
They will pay for an ACT test for the entire 8th grade class as long as parents will meet with them later on for a "diagnostic" conversation based on the scores. Since mine only took SAT through the talent search this year he is very eager to do it.
Also, the same school will administer Explore to all its 8/9 graders for a fee of $7.50 per student!
