I have 2 lists on my parent site that are public lists we used to gather and document training development requests and course revision requests. I have a child site that our development group utilizes for our meetings - this is not a public site - it is only for the team. Currently when ever we get a development request or a revision request on the parent site, I take the information from the requests and populate 2 different separate lists on my child site. I would like to streamiine this process and have all entries on my parent site lists automatically populate lists on my child site. These can be clones of the parent site lists - whatever works. I have sharepoint designer - but have never used it.
If you have a SharePoint designer you can create a workflow between Master and Child list. The workflow will update/delete/add the items to the children lists accordingly, and both lists will be synced.
Here is a practical example: http://www.hexanes.com/?p=897