Hi Konrad,
Could you give us an example of your question and data and what part of it you are going to want to download. The reason I ask, is that in some cases, it might just be easier to provide tools for the student to use right in the question instead of trying to download and use the data in a spreadsheet. For instance, with a Generico filter it is possible to include various types of calculators, charts, or graphing tools right in the question. You might also just need a link to a file that they click on to download.