  High precision measurements of the parity-violating asymmetry in polarized
electron scattering from nuclei can be used to extract information on nuclear
and nucleon structure or to determine Standard Model couplings and higher-order
radiative corrections. To this end, low uncertainties are also required in the
effects that inevitably arise from modeling the underlying nuclear structure.
An experimental precision of a few tenths of a percent may be attainable for
the asymmetry if the appropriate kinematic range is chosen, as will be
discussed here for the case of $^{12}$C. And given this, the dual goal of
ascertaining both the sizes of various nuclear structure related effects and of
providing estimates of their uncertainties for this particular target will be
discussed.
