Existing evidence documents that the majority of children in Australian pre-school rooms will not sleep during the allotted sleep period (Staton, Smith et al., 2013). Accordingly, two hypotheses, regarding the impact of sleep time on the emotional climate and behavioral management within ECE rooms are proposed. First, a disjuncture between scheduling of sleep and a child's ability to sleep is likely to have implications for emotional climate and behavioral management through increased violation of behavioral expectations and escalation of negative emotional climate (e.g. yelling and threats to establish control).