I am planning to get both black and regularly colored neon tetra and since I have never kept them I was wondering if the two would school together or not. (I'm getting enough for them to make separate schools if they'd like).
If you are planning on doing a community tank with a school of Tetras, do yourself a favor and pick one or the other (unless you have a very large tank). Getting a larger school of one single type of Tetra will not only benefit them with their larger numbers and encourage them to have more natural behaviors, but it will make your tank look much better IMO. Having a few of many different types of Tetra will just make your tank look too busy. What size tank are you planning on adding the Tetras to?