Going to a Catholic School Namo tassa bagavato arahanto samma sambuddhasa (Sorry, I am not fluent)

I go to a Catholic High School &amp; I have a theology class that preaches only their truths &amp; say it is the supreme truth above all &amp; that if one does not believe so they will perish in the extreme notion of the eternal hell.

I try my best to have no aversion toward other followings &amp; I also take a genuine interest in them, but when it comes down to being metaphorically hit in the face with them every day, it can be hard to focus on my emotions toward other paths, as well as it can be hard for me to not get distorted by them &amp; follow the Buddha's teachings. 


  What would one offer as advice to not sway from the Dhamma by distorted teaching while at
  the same time not have hatred in general (due to their delusions &amp; spreading of
  so) towards other paths?


Metta to all! :)
Why don’t you instead use this as an opportunity to explore what they do get right?  Catholicism specifically can have tremendous similarities to Buddhism.  The writings of St. John of the Cross especially come to mind.  Rather than meeting them with aversion, why not curiosity and openness instead?