This study seeked to determine the impact of sleep health (i.e., sleep latency and sleep minutes) on socioemotional outcomes in kindergarten students during the transition to kindergarten. To complete this study, we utilized the 230-participant study sample from the SIESTA K dataset. The measures for this specific study were taken at two time periods, pre- Kindergarten (K1) and early kindergarten (K2). Sleep latency was measured by self-reported lights out and actigraphy, while sleep minutes were measured utilizing actigraphy. The five socioemotional outcome measures were completed by the kindergartener’s teacher. Our results found that both K1 sleep latency and K1 sleep minutes were more predictive of K2 socioemotional outcomes than K2 sleep latency and K2 sleep minutes were. It was concluded that pre-kindergarten good sleep hygiene carries over into the initiation of school. It was also determined that the lack of associations in K2 was due to decreased variability in sleep.