  We compute the two-point correlator between left-handed flavour charges, and
the three-point correlator between two left-handed charges and one strangeness
violating \Delta I=3/2 weak operator, at next-to-leading order in finite volume
SU(3)_L x SU(3)_R chiral perturbation theory, in the so-called epsilon-regime.
Matching these results with the corresponding lattice measurements would in
principle allow to extract the pion decay constant F, and the effective chiral
theory parameter g_27, which determines the \Delta I = 3/2 amplitude of the
weak decays K to \pi\pi as well as the kaon mixing parameter B_K in the chiral
limit. We repeat the calculations in the replica formulation of quenched chiral
perturbation theory, finding only mild modifications. In particular, a properly
chosen ratio of the three-point and two-point functions is shown to be
identical in the full and quenched theories at this order.
