Getting Started - OpenVentures
Sure - happy to have a conversation. Pop in to chat.oeru.org. There are pros and cons with self-hosted versus community wiki projects and you need to assess the needs for your school and what works best for you.
Community projects mean better support - but you will be restricted by community values. For example, the Wikieducator community applies free cultural works approved licensing, which for example would restrict embedding of video players that do not meet open standards and or appropriate licensing whereas your school may be less concerned about these issues.
I did notice your wiki does not have a default license - so you will want to have a discussion about that before you project grows too big.
Of course any educator is free to participate on WikiEducator - or any other of the great open community projects.
