Kyle was not oblivious to the fact that Iras was the Instructor of the [Survival(practical)] course.
However, he couldn't neglect hunting beasts just because the teacher was somewhat of an asshole and irked him.
That was why Kyle chose the Survival course as the descriptions said that they would go out in the wild and hunt quite often.
This was quite important for him to save up more Soul energy which he would use at a later time.
And, if he were, to be honest, Kyle felt like provoking the noble Instructor as well.
Neither he nor his group had done anything to Iras in the first place.
As such, he wanted to figure out why he acted like this, and if it was truly just because they belonged to other races.
Maybe there was more behind his prejudice than his traditional thinking.
Either way, Kyle had to complete a main task for the Survival course, and the same could be said about the other courses.