“…With the exception of the female principals in the Rocky Mountain State, all other principal groups ranked informal classroom observation in second place. The findings are important to note because both classroom walkthroughs and informal classroom observations allow principals to evaluate teachers' instruction on a more routine basis, thus painting a clearer picture of teacher effectiveness (Marshal, 2005(Marshal, , 2012bYariv, 2009). This also allows principals to observe teacher practice in a natural, unplanned fashion as opposed to formal classroom observations in which teachers have prior knowledge they will be observed (Marshal, 2009(Marshal, , 2012aRange et al, 2011;Sather, 2009).…”