Favoritism/discrimination

In the CAS project in which I teach my classmates math, you could say that I am showing favoritism to Math and my classmates, but there are reasons for that. 1) I am very good at Math, and understand everything that we are taught, unlike most of my classmates, therefore it makes sense to teach Math 2) I know what the material that is being taught, since I am in the same class, and I know what my classmates are struggling with, as I am witness to it, I don’t know what other classes are struggling with or what they are being taught 3) Math is the only subject that a lot of my classmates are struggling with, in all the other classes, we are all on similar levels, so there is no reason to teach any other class. For these reasons, I am teaching only my classmates and only Math.