The student edition is the one that is mass produced and sold to the student population. The answers to the odd-numbered problems are in the back of the book, the all answers or only odd-numbered answer to the chapter tests may also appear in the solution section of the book.
The document linked below is the same one that appears in the first article, The fortextbook option: Part 1, The Instructor Edition, but it is compiled using the studented option.
Continue reading in PDF: fortextbook_se.pdf
The source file is attached to the PDF.