Or OpenDNS to at least get basic filtering
There's a FREE smoothwall?
1. Sign up for Google Apps for Education (free) - create users as needed and get any users who need files at both sites to upload them to google docs Google Apps for Education - Free Hosted Email (Gmail) for EDU
2. ADSL connection at Hogwarts with Firewall/Filter as required
3. Quick and dirty wireless network at Hogwarts with whatever devices are cheap and cheerful to connect
4. Completely separate domain and DC/DNS/DHCP/Print Server if you need it at Hogwarts for group policy etc.
[Not saying who for fear of reprisals]
Job logged nearly 3 years ago with them... Still not fixed.
Whenever something does get fixed, after god knows how long of waiting, I'm never told what they did... Sometimes they don't seem to know either... When it goes again, they act surprised that I didn't fix it.
Websites blocked for no reason, very dodgy sites left open with no way of getting them blocked.
Hell, they even killed our network by changing our I.P to one that doesn't exist. [It was a mis-type... but the wrong numbers are no-where near each other on a keyboard... I sense sabotage.]
Link2ICT have always been good to me...until i needed to get intouch with Network Services...
Obviously, the speed may be an issue, so it might be that you set it to auto sync every so many hours or overnight, so it's not instant, but the support over the connection would obviously be instant .. but it means you would need proper access (either over P2P or using external access IPs and all that jazz) .. obviously, P2P would be best option in terms of getting the same filtering for the network too .. but as others have mentioned, there are always free get you by offerings ..
Good luck with it all though .. I certainly don't envy the task ahead for you .. :)
Edit: PS. with you being in Brum, I can recommend the services of Unique Business Solutions (http://www.ubsol.co.uk/) for getting help with the P2P and getting stuff up and running .. they're really good guys .. :)
It sounds like there is a clear deliniation between the two sites and who will be using them so there will only be a subset of rosources that really need to be shared over a site-to-site link.
My recomendiation is this, get another server for the second site with a full rate DSL connection and a fixed IP. Put ISA server or another such solution on it and have a version of ISA at the primary site. It is really easy to setup a site to site VPN over this which all of your internet traffic and shared traffic could be piped over. This would allow you to pass everything through your existing filtering at the main school.
Have the second site server setup as a file server and a DC so that it replicates all AD stuff and seporate out the junior documents/profiles/stuff and host them on the new server so that the majority stays local. Having the link back to the main site always present means that any shared stuff that may be accessed from either site could just stay on the original server or be replicated using robocopy or DFS if you're brave.
This should lead to it being reasonably quick still for most scenarios.
As to network stuff I would just stick to the fundimentals and try to get good gear, layer 2 managed gigabit switch if your getting one and solid wireless. Bear in mind that if you already have one wireless system then go for a different type they may conflict and fight each other if ever brought together on the same site so going different could be the start of a replacement rather than the supliment to wireless.