It's not a case of seeing double at SaintMarysDerry - there really are six sets of twins in year eight... and that's testing their teachers
It can be a challenge for teachers to put names to faces and at one Londonderry school it could prove even more difficult.
That's because six sets of twins are now part of the year eight group at St Mary's College and some of the sets are identical. Principal Brendan McGinn admitted the teachers were struggling a bit telling some of the twins apart.
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