Thats kinda tricky having a "classroom" in an industrial. Theres specific rules that deal with assembly and egress one would need to followed, over riding the class of structure or various types of structure in one edifice, and others have posted on it.
. Office space adjoining Industrial space comes to mind. But it all comes down to, also said, the AHJ, how they apply the NEC and their building codes.
A good set of drawing will not cause any questions to be asked in the
field. Toast someone when get a set!