We investigated whether individual differences in overall receptive vocabulary knowledge measured at the beginning of the year moderated the effects of a kindergarten vocabulary intervention that supplemented classroom vocabulary instruction. We also examined whether moderation would offset the benefits of providing Tier-2 vocabulary intervention…

The 3-year Pennsylvania Dyslexia Screening and Early Literacy Intervention Pilot Program (Pilot) began in 2015-16 (Year 1) with the kindergarten class of 2015-16 (Cohort 1). In 2016-17 (Year 2), the Pilot was implemented with Cohort 1 students, now in first grade, and a second cohort of kindergarteners (Cohort 2). A third cohort will be added in…

A classroom randomized trial (n = 31 classrooms) was conducted using the Second Step Early Learning (SSEL) curriculum compared to usual curricula. Head Start and community preschool classrooms enrolling low income children were randomly assigned to deliver SSEL (n = 16) or usual curricula (n = 15). Data are reported for four year olds…

Two intervention approaches designed to address the multifaceted academic and cognitive difficulties of low-income children who enter pre-K with very low math knowledge were tested in a randomized experiment. Blocking on classroom, children who met screening criteria were assigned to a Math + Attention condition in which the Pre-Kindergarten…