The ability of certain alkyl substituted epoxides to accelerate the photoinitiated cationic ring-opening polymerizations of oxetane monomers by substantially reducing or eliminating the induction period altogether has been termed by us kick-starting. In this communication, the rates of photopolymerization of several model kick-started oxetane systems were quantified and compared with the analogous biscycloaliphatic epoxide monomer, 3,4-epoxycyclohexylmethyl 3,4-epoxycyclohexanecarboxylate (ERL). It has been found that the kick-started systems undergo photopolymerization at rates that are at least two-fold faster than ERL. These results suggest that kick-started oxetanes could replace ERL in many applications in which high speed ultraviolet induced crosslinking photopolymerizations are carried out. (c) 2014 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2015, 53, 586-593