Graduate students face an array of choices when evaluating compensation-and-benefits packages that make comparisons difficult. A "Chronicle" survey shows that the offers to teaching assistants and research assistants vary widely. Some institutions cover 100 percent of graduate students' tuition, while others waive only a portion. It is possible to get health insurance paid in full but coverage for family members is harder to come by. Then there's location: when it comes to paying rent, buying food, and otherwise making ends meet, stipends do matter. Data collected by "The Chronicle," though not comprehensive, provide a snapshot of what graduate students are earning in six fields this academic year. Comparisons among stipends are difficult because every institution has its own way of handling a financial package. Still, it is safe to say that while graduate students are hardly living the high life, some of them (science students) are less poor than others (English, history, and sociology students).