10.—(1) A local authority must, before the beginning of the funding period and after carrying out any consultation required by regulation 9(2), decide on the formula which it will use to determine the budget shares for schools which it maintains (other than special schools, pupil referral units and nursery schools, and in relation to nursery classes in schools maintained by it).
(2) A local authority must use the formula determined under paragraph (1) in all determinations of school budget shares in respect of the funding period.
(3) A local authority must, before the beginning of the funding period and after carrying out any consultation required by regulation 9(2) or (3), decide on the formula which it will use to determine—
(a)the budget shares for nursery schools maintained by it;
(b)the amounts to be allocated in respect of nursery classes in schools maintained by it;
(c)the amounts to be allocated to relevant early years providers in its area; and
(d)the amounts to be allocated in respect of community early years provision in schools maintained by it.
(4) A local authority must use the formula determined under paragraph (3) when making all the determinations referred to in paragraph (3)(a) to (d) in respect of the funding period.
(5) A local authority may not change its formulae after the funding period has begun.
(6) The formulae must be determined in accordance with Part 3 of these Regulations.