Most semi automatic pistols with the exception of maybe 1911's are very easy to field strip. Sigs, Berettas, and others with takedown levers are as simple as lock the slide back, rotate the lever, pull off the slide, and remove the barrel/recoil spring/rod.
I would not be concerned about it "for use in a class". You should be familiar with the operation, takedown, and assembly of the firearm(s) you will be owning. If he is teaching a class, maybe he should bring several firearms that have different methods, so the students can learn on a similar platform to their own.
Just my .02