Mine do.... sometimes.
I had two Julliis and four albinos (A jullii died while under the care of someone else during vacation.)
When I had the two Julliis, they would school together and the albinos would school, and sometimes would mix if there was one albino that wasn't with the other group.
Now the one julii only occasionally hangs out with the albinos when he isn't hiding somewhere.
The lady at petsmart told me they would school, but they only sometimes do. I would suggest you get all the same, as in the end they'll be more active and happy. But ultimately it's your choice.