Can DHIS2 be used for other development programs besides health? For example: education or economic development?
Yes. While DHIS2 was primarily designed for HIS use, its development has shifted towards a flexible meta-data approach.
There's a beautiful guide available here:
How to Set-up DHIS2 in a New Context? https://www.mn.uio.no/ifi/english/research/networks/hisp/integrated-health-information-architecture/ch-07.pdf