Differential cross sections and Stokes parameters are reported for electron-magnesium scattering computed in the coupled-channels approximation. A configuration-interaction representation is used for the five lowest singlet states which are included in the close-coupling expansion. The calculated differential cross sections for elastic scattering and the resonance (3s²)¹S^e-(3s3p)¹P⁰ transition are in fair accord with experimental data, as are total cross sections for the resonance transition. There are only minor discrepancies in the comparison of the computed Stokes parameters with experiment.