Microsoft Corp has teamed up with the Prentice Hall College Book Division of book publisher Simon & Schuster, itself a Gulf+Western Inc company for the publication of a version of the Microsoft Excel spreadsheet specifically designed for students: set for release in April, the Student Edition of Excel will include all the features of the retail edition and will be limited only by the worksheet size, just 64 columns by 256 rows; it will also include course-specific applications to be developed by Prentice Hall, which plans to promote the product with its texts in those disciplines; no prices given.