Kinetic analysis of high-conversion free-radical polymerization is discussed in terms of the complete solution of the classical kinetic scheme, which involves initiation, propagation, termination, and chain-transfer reactions. Expressions for kinetics of formation of each species existing in the polymerization mixture are presented. To demonstrate the applicability of the mathematical model, monomer conversion and the formation of the insoluble polymer component in the dispersion polymerization of styrene and methyl methacrylate (MMA) in 2-propanol have been measured at 70 degrees C. The values obtained for k(d) and k(p)/k(t)(1/2), where k(d), k(p), and k(t) are dissociation, propagation, and termination rate constants, respectively, are in agreement with those reported in the literature.