I am like many here, I didn't notice an adjustment period.

Aside, found out that DD's new teacher, first day today, totally accepts accelerated subject skips. She can do grade 10 math if she is capable. And she is in a 4/5 split gifted class so it can be a slide skip. I have a feeling though she is a little light on writing demands. DD had such high great teachers in raising the bar for her writing. I thought her essays in grade 1 were 5th grade research projects. But then the bar got lowered in 2nd grade. I think this really is teacher specific and hope I can find a teacher who keeps her within the guidelines. Writing can be the easiest way a gifties slacks off. NYS standardized tests were an interesting experience because DD did the practice test, scored 70%. She answered but without details. Without specific reference, copying the exact phrases. She paraphrased, which didn't get points. And she paraphrased efficiently which loses points.

Getting back to the topic. Math is easy to adjust.