Below you will find a number of sites, articles and power points on assessment!

An article on pre-assessment:

An article on formative assessment:

Dawn Holden (Instructional Services) did a few sessions at WiT and here are her power points on assessment:

Here's a link to the Network of Performance Based Schools site - it has lots of information on assessment for learning:

Dylan Wiliam is a well-known researcher in the area of assessment for and of learning:
Dylan Wiliam

Damian Cooper is an educational consultant that assists schools with instructional and assessment practices:
Damian Cooper