1968 Batch Alumni of S.D.P Sr. Sec. School celebrated its Golden Jubilee in the school premises. On this occasion 40 (forty) Ex- Students along with their teachers attended the celebration with full zeal and enthusiasm. The proud alumni of the school serving the society by assuming very respectable positions like : Top Engineers , Doctors, Civil Servants, Industrialists, Businessman and Bankers. One of our proud alumnus Sh. Satish Kumar Goel retired as Chairman Department of Excise and Customs (Govt. of India). On this occasion N.C.C. Cadets accorded a warm welcome to all the alumnus by playing the tunes of school band. The students presented cultural items on this occasion. On this occasion the alumni’s exchanged their views with one another and attended a class in their old classroom by their respectd teachers.: Sh. Harish Chander Gupta, Sh. Bimal Kumar Verma and Sh. B.L. Bathla. Sh. Jasveer Singh Chauhan Principal welcomed the alumnis and appreciated the efforts of each and everyone to make this function a memorable one. Sh. Balraj Kumar Bhasin President of S.D.P School conveyed his best wishes and thanked everyone for such a unique venture.