One concern is whether a year skip helps much. If a student is advanced by a few years, one skip doesn't offer much benefit academically. It may be worthwhile to get to a higher level sooner if another school or program fits better, but one year isn't that much different. One thing that does change with advancement tends to be workload and if you have a kid who is pushing and wanting to learn, increasing too easy school workload can interfere with time for enrichment learning at an appropriate level.
I hadn't thought about the too easy workload increase crowding out time for what he really wants to know. He's a rusher who makes silly mistakes/omits info when it comes to things he already has learned, so increasing worksheets in that department may backfire big-time for him during grading. Not what I want for him. He's very A ("A plus-plus, actually, mom!) oriented and would feel penalized by a swamp of too easy sheets.
