Mango mania

So today I spent the day at Mangotsfield Secondary
Note to self: never change from Primary to Secondary - you don't have the patience

I was with my year 5 class as they were having a taster day - DT and Science. My little Y5s were so excited at the bunsen burners and the vices and the Saws. But I did notice something strange happen to a few of them.
THEY MUTATED INTO TEENAGERS WHO WERE STRUTTING AROUND THE FIELD WITH SERIOUS ATTITUDE.

Is this what happens? Do some perfectly lovely children in y6 mutate into teenagers with attitude when they step foot on Secondary school soil?