Welcome, theyanswered!
smile

While every student, learning environment, and family is different and therefore I do not have clear cut answers to your questions, three things come to mind which may be of interest:

1) The view of IAS regarding siblings is rigidly in support of birth order. While a gifted program is not necessarily whole-grade acceleration, there may be strategies such as single-subject acceleration involved. https://www.hoagiesgifted.org/iowa_accel_scale.htm

2) There are some schools which intentionally separate twins. Other schools may treat them as any two random individual students within the classroom. In my observation and experience few schools make an effort to bundle twins together.

3) Here is a link to a thread which is a roundup on Advocacy (http://giftedissues.davidsongifted....y_Advocacy_as_a_Non_Newt.html#Post183916), including important concepts of:
- family discussion and agreement on goals to make sure all are on the same page prior to advocating at the school,
- appropriate "fit."


I'm looking forwarding to reading others' posts in response to this topic.