“…Some argue that effective TLCs benefit from a specific content focus and location (e.g., Slavt, Nelson, & Kennedy, 2010) and be led by experts (e.g., Stein, Smith, & Silver, 1999). Others suggest that interschool TLCs can be effective (e.g., Richmond & Manokore, 2011) and that leadership should be distributed among the TLCs members (Stoll et al, 2006). Further research has found that the role of a coach was a critical factor in supporting a TLC (Grossman et al, 2001;Richmond & Manokore, 2011;Stein et al, 1999).…”