[Multiple prints or giant printingtask?]

Hello!

 

I'm working as teacher with an Ultimaker Original (not the plus) but I don't have any experience with this kind of printer. 

My students are almost done designing and getting ready for printing.

My question is; what do you think would be better (and faster)?

 

Letting every student print his/her own design one after another? Or putting multiple designs in 1 big printtask?

 

I ask this because I've seen other designs getting to hot, so the PLA 'deforms' or 'warps'...Sorry I dont know the correct word (But got picture of that)

Not warped

 

This side is warped

 

Would love to hear from you people!

Thanks in advance!