Kolkata, May 14 (UNI) Delhi Public School (DPS) represented by Bisaja Chakraborty, Sayantika Bhowmik, Oindrila Paul and Sumedha Ghosh entered the semi final of the Fours for the junior girls defeating South Point at the last four stage of the 50th All india Invitation Schools Regatta (AISR) Championship organised by Lake Club here Wednesday.