And here I would suggest that you may not want to give your twins their scores since, even though they tested equally, they will each have their own strengths and relative weaknesses and they each have their own personalities that will affect things like schooling. !
we certainly don't plan on telling the girls, well not any time soon, the more I think about it the equal scores are a good thing but they are so so so not alike at all and yet they keep going through life doing everything the same (they even both dead heated in their first ever running race recently, one is short and a powerhouse and the other is thin and lanky yet go figure they cross the finish line together!). I guess I was really hoping these results would allow me to talk objectively to their teacher about their relative strengths and weaknesses and for her to stop seeing them as so alike (not sure how I am going to do that!). Their personalities are amazingly different one is shy, driven, dedicated, perfectionist the other seems to ride her twins coat tails and breeze through life effortlessly with as little thought, as much fun and by following the least amount of rules (or so it all seemed)
like you, I do find twins studies of any sort an interesting read. I'd love to hear about any or gifted twins