A method for making a polycarbonate-polysiloxane copolymer, wherein the polycarbonate-polysiloxane copolymer comprises from 0.5% to 80% by weight of a hydroxyaryl-terminated polydiorganosiloxane, and wherein the hydroxyaryl-terminated polydiorganosiloxane has from 10 to 100 diorganosiloxy units, the method comprising: preparing a bischloroformate reaction mixture by combining a first portion of one or more aromatic dihydroxy compounds with phosgene, a phase transfer catalyst, an aqueous solvent and an organic solvent under interfacial reaction conditions while maintaining the pH in the range of from 3 to 8; adding a portion or all of the hydroxyaryl-terminated polydiorganosiloxane to the resulting mixture of, wherein the total hydroxyaryl-terminated polydiorganosiloxane is a sufficient amount to satisfy the desired polydiorganosiloxane weight percent requirements in the finally resulting polycarbonate-polysiloxane copolymer; adjusting the pH of the mixture of step to a value in the range of 10 to 14 either before, during or after adding the portion or all of the hydroxyaryl-terminated polydiorganosiloxane; subsequently adding one or more of the remaining portions of the total amount of the one or more aromatic dihydroxy compounds, an aqueous solvent and an organic solvent; optionally repeating the addition of hydroxyaryl-terminated polydiorganosiloxane and/or aromatic dihydroxy compound until the total amount of the one or more aromatic dihydroxy compounds has been added and all of the hydroxyaryl-terminated polydiorganosiloxane has been added; allowing reaction to occur until 50 ppm or less of residual chloroformates remain; subsequently adding an agent selected from the group consisting of a chainstopper, a co-phosgenation catalyst and combination thereof when the 50 ppm or less of the residual chloroformates remain, and adding a sufficient amount of phosgene to the resulting mixture of while maintaining a pH of 9 to 12, to complete a reaction to form the polycarbonate-polysiloxane copolymer. preparing a bischloroformate reaction mixture by combining a first portion of one or more aromatic dihydroxy compounds with phosgene, a phase transfer catalyst, an aqueous solvent and an organic solvent under interfacial reaction conditions while maintaining the pH in the range of from 3 to 8; adding a portion or all of the hydroxyaryl-terminated polydiorganosiloxane to the resulting mixture of, wherein the total hydroxyaryl-terminated polydiorganosiloxane is a sufficient amount to satisfy the desired polydiorganosiloxane weight percent requirements in the finally resulting polycarbonate-polysiloxane copolymer; adjusting the pH of the mixture of step to a value in the range of 10 to 14 either before, during or after adding the portion or all of the hydroxyaryl-terminated polydiorganosiloxane; subsequently adding one or more of the remaining portions of the total amount of the one or more aromatic dihydroxy compounds, an aqueous solvent and an organic solvent; optionally repeating the addition of hydroxyaryl-terminated polydiorganosiloxane and/or aromatic dihydroxy compound until the total amount of the one or more aromatic dihydroxy compounds has been added and all of the hydroxyaryl-terminated polydiorganosiloxane has been added; allowing reaction to occur until 50 ppm or less of residual chloroformates remain; subsequently adding an agent selected from the group consisting of a chainstopper, a co-phosgenation catalyst and combination thereof when the 50 ppm or less of the residual chloroformates remain, and adding a sufficient amount of phosgene to the resulting mixture of while maintaining a pH of 9 to 12, to complete a reaction to form the polycarbonate-polysiloxane copolymer.