Our teacher librarian also takes every Yr 7 class for introductory lessons and gets to know them through this. I have found as a classroom teacher that every time I have collaborated on units of work with my TL to use her expertise, the end results have been enriched by this. The students too are more willing to seek the guidance of the TL in this process and perhaps then this has a flow on effect encouraging them to seek their further guidance in other KLAs.
