In that case I tend to agree as it makes things way easier, however I do not necessarily agree with the unstructured format of self-study as it could very well backfire with credit issues as well as procrastination and complacency issues.

Perhaps Principals are most likely to agree with the least amount of disruption - though perhaps to develop character, willpower and mental willingness to grind perhaps transfer to a school that would allow a grade skip even if the kid would not be the best?

I'm not the best student in my top ranked university even not grade skipped due to a discriminatory conflict before but if I had sent all the documents to that university in 2023 I think I wouldn't have mastered each course within the first few weeks and I wouldn't be at the top or near for every course, but I personally would not have cared.

I think that the way of radical acceleration in the same age group may (bluntly) often be an ivory tower that does not account for the realities of life. I personally would've preferred to be with an older grade even if I wasn't the top in every subject, I would've fought for my position and developed my character. It is a big reason why I enjoy long distance running.