I am so glad that this has been resolved so well in, this instance.
But I agree with Wendy - what on earth was the "breeder" thinking of (apart from the obvious £

) selling piglets of this cross-breeding to a school?

For that matter, what were they thinking of making such a bizzaire x-breeding in the first place
School Farmer - if you are going to get some new pigs in the future, please contact the BKKPS who will be able to sign-post you to a responsible breeder, who will provide you with ongoing support & aftercare (you can also join as a member without owning pigs first - the website is full of helpful advice). There are some other "newer to the UK" recognised breeds that are also fairly small & Wendy or Rispain will be able to provide you with some more info if you PM them.