Sins will happen
If you go to a Catholic school, you learn many different subjects: history, math, English, science, and religion, to name a few. Each one is distinct, and yet each one connects to the others. All subjects lead back to religion because all good things, like knowledge, lead to God. This is true for human beings as well. Each of us is distinct in our own ways, yet we are all made by God. We and what we learn are all connected to God, so we must use knowledge to elevate ourselves and others.