The critical magnetic neutron scattering from CoO has been measured near the Néel temperature TN. The diffuse intensity at various wave vectors was assumed proportional to A+|TTN-1|-γ above TN and A-|TTN-1|-γ' below TN. Using the method of Als-Nielsen, we measured the temperature dependence of the critical scattering at several values of q [the displacement from the (111) position in reciprocal space] and used these data to calculate the relative magnitudes of γ and γ'. In order to satisfy scaling law requirements we referred our measurements to a rigid lattice by correcting for the large tetragonal contraction below TN. We found that γ'=(1.02+/-0.02)γ, and this suggests that static scaling laws may apply to CoO. In addition we ascertained that A+A-≅7.6+/-1.5 in agreement with the linear theory of Schofield, where A+A-=6.0+/-0.8 for CoO.