How old is he, how old is the sister?
One idea is to wait and test a bit later. While there are many cases in which one sibling is at that level and other(s) are not; it is also a reality that many times younger sibligns are less often identified as gifted.
We origally had thought of applying for ODD and then waiting a couple of years for YDD. Most of the benefits of a program like DYS will be for you as a parent. If you think, once you have access to all the programs (like online seminars) that your Ds would also enjoy them, then you might think of budgeting for the tests.
Now, we are considering applying earlier so that YDD can also atttend the annual gathering.
I think in the long run, you have to consider a variety of items. Jealousy is an issue for some kids and not for others. For many, there is the immediate need that one child has but not another one, in terms of schooling for example.
