Not sure why the constituent body are getting involved?
Here in the UK it is my understanding that issues such as this for a lad so young are dealt with at the Club/School level.
normally yes but with some exceptions, for example
3.3 Cases covered by RFU Regulation 19.1.14(f) (serious injury), 19.1.14(g)
(cases under police investigation), 19.1.14(h) (racial abuse cases) shall be
referred to the NYDS who shall determine whether the Club, the CB or the
RFU (if agreed by the RFU Head of Discipline) should deal with the matter.
and a catch-all
1.6 The RFU Head of Discipline has the power to deal with any case or to
direct how a case is to be dealt with.
I think one purpose of this is to allow the RFU to intervene in any case where it is felt that the club/school discipline process was mistaken or acted inappropriately. Another might be to reserve the ability to deal with any very unusual cases - such this one.
No doubt the NZ Regs contain similar clauses.
For anyone who wants to look it up, it's Reg 19 App 6