In analogy to the linear optical method optical rotatory dispersion (ORD) which is sensitive to chirality, a surface second harmonic generation (SHG) experiment with plane polarized light is conducted to study a monolayer of chiral molecules at various interfaces. The R- and S- enantiomers of 2,2'-dihydroxy- 1,1'-binaphthyl (BN) adsorbed at the air/water, air/quartz, and liquid/liquid interfaces are studied. Using p-polarized fundamental radiation, the polarization of the SHG signal is rotated by a value (Phi) according to the surface chirality. The rotations are large: tens of degrees from a monolayer of material. R-BN and S-BN give (Phi) values of the same magnitude but opposite signs. The orientation, spectral and concentration dependences of the SHG rotation are explained in terms of the electric dipole-allowed second order nonlinear tensor. The experiments show that while SHG-ORD has origins quite distinct from ordinary ORD, it can be utilized to measure chiral structures of surfaces.