IBM Spss Grad Pack 20.0 Premium- 1 Year License- Installs on up to Two Computers Full version for students only. Teachers do not qualify. One year license. Installs on up to two (2) computers. Includes all of the SPSS add-ons, including SPSS Base, Advanced Statistics, Regression, Custom Tables, Data Preparation, Missing Values, Forecasting, Decision Trees, Complex Sampling and much more.