@daywithoutgames I dunno, this manga has shown that most actors have had proper plans (even if some of them have been dumber than others).
So look at it this way:
It doesn't matter
how he created the golem, the fact remains that it alone was more powerful than a roomful of applicants to the top tier magical school. So I'd expect him to lie about how he made it (or got it), the only thing I can be reasonably sure about is that it
isn't anything like synthesis magic.
So I need to keep an eye on him and try to find out what the real secret is, so I can steal it - or protect myself against it. But until then it's better if I don't show my own hand either, so I simply accept him to my class since that was already the public deal, and so I'll be able to keep a close eye on him.
Then I accept the other three because apparently they are his allies so should be kept under guard for that reason - but also because I simply like the boys spunk. He seems like a proper rival for me. (Plus I like to tease that other teacher.)