Looks like it's way more open source than the two "open source" school MIS systems I looked at, one had no code available, the other an old version dumped on github, but not linked from their main page until you signed up.
This project looks good, but it does remind me of the issues with management systems for public services. With the level of requests we deal with from school users that "need" features to satisfy management/governors/government it makes it very hard to do open source and be suitable.
Things have long moved on from that period, but a few of us are just curious to see if the code is still around from that time or if our product is one mavhc was talking about (unlikely).