Experiential education is a child-centered educational framework that is popular in Flemish kindergartens. In this study, the impact of five experiential practices (autonomy support, stimulation, emotional support, time for choice activities, and interest-based activities) and the moderating influence of initial achievement (language and arithmetic achievement) was examined. Data were collected on 2,360 kindergartners (139 classes), their parents, and their teachers. Hierarchical linear models examined the extent to which experiential practices and children's background characteristics predicted several aspects of children's school adjustment: language and arithmetic achievement, school enjoyment, and independent participation. Results indicated that not all experiential practices were related to optimal school adjustment; a stimulating teaching style was related to greater learning gains in academic achievement, but an autonomy-supportive teaching style was related to smaller learning gains in academic achievement, especially among low-achieving children.