The 13-year-old classmate had earlier allegedly attempted to murder two members of staff who she stabbed at Amman Valley School inAmmanford, Carmarthenshire.
Blade
The attacked pupil, who was 14 at the time, said she was being told about a knife assault on assistant headteacher Fiona Elias, 48, and colleague Liz Hopkin, 53, when she was set upon by the younger girl with a 2in fishing tool blade in April.
Swansea Crown Court heard a police interview in which the girl, now 15, described how she was making her way to a lesson when she noticed a "big crowd of people". She said: "I went over and I was asking, 'What's happened?"
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