These systems are work in progress. New facilities are being built in, new units are being built too. If you purchase a system I will offer the new facilities for free next year. Units are very time consuming to create and integrate, so I will charge for them.

Installing new features into populated systems is complex and experience makes me cautious about throwing out updates. If you do have a problem, contact me, I'll sort it out and add the issue to the FAQ below.

The systems have been intensively tested with up to 120 students and five teachers using them at the same time. All the issues we have discovered have been dealt with, but you may encounter some new issues. I will answer questions, post video solutions, but I'm still teaching so I cannot offer immediate phone support.

If you purchase the system, and it cannot be configured for your network, then I will, of course, refund your money, but I cannot envisage that happenning. If your system runs Microsoft Access 2003 (the program it was written in), there will only be minor tweeks to make, such as those explained below.

I have registered copyright for these database systems (to stop big firms copying all of my hard work), but I have left the system such that teachers who are experienced database developers can get in and tweek it to their needs. I am fine with that, so long as such systems are not then sold on as someone else's work.