A very interesting thread.
The responses to the initial question have shown that there is a demand for tools that can handle performance data in a more flexible way than is possible at present.
There are plenty of good ideas suggested here to be able to pull together a spec of the sorts of additional data tools that people would find useful.
I imagine that the astute performance data manager will need a range of tools - SIMS, RAISEonline etc. plus the enduring flexibility of Excel. One of the needs seems to be to reduce the time spent trying to move data from place to place, or on writing macros. That time could be spent working to help teaching staff to raise school standards.
I suspect that a small army of people in schools are busy trying to program Excel to do exactly the same tasks. It may be that EduGeek could provide an exchange service for data utilities that could save others time? Maybe it should encourage an Open Source approach to creating what is needed?
The good news is that MIS companies, and others, are creating additional applications that should make professional life more productive for those who handle data for a living.