- Time. The more data you have the more power you have. Creating long term trend lines and charts will help you to see the big picture and understand anomalies such as timing differences that may be seasonal.
- Relevant data. You need to measure and understand the industry which you work within. Understanding an industry or business that is unrelated = a nice hobby but nit much else.
- New students.
- Existing and returning students.
- Number of students passing vs number of students failing.
- Capital investment.
I found this great article written by Gary Collier which also has some brilliant ideas and thoughts in it.