Scaffolding Analysis of server log files For the measurement of results of scaffolding the log-files on the server can be used. In this log-file the requests and responses to and from the server are stored. From this data conclusions can be drawn about the popularity of specific pages, the location of looking at the pages, the time when the material is most often viewed.
Several tools are available for analysis of log files.
Of these, Webtrends appears to be the market leader. For analysis of the time that users spend on a page probably a client-side tool should be used. The server only registers when a user requests something and not what the user is doing in-between. A user could be reading, but you are not sure. The same applies if you want to know which path through the material students follow.