Final answer:
Kindergarten and first-grade students are usually housed in the Primary wing of an Elementary school, in accordance with many educational codes.
Step-by-step explanation:
Many codes require that kindergarten and first-grade students be housed in the Primary wing (A). This is typically a section within an Elementary school where the youngest students are provided with an environment that is scaled to their size and developmental level. The reason for this requirement stems from the understanding that young children benefit from a specialized setting focused on early education. Research has shown that quality pre-K programs can significantly impact a child's academic and social success, thus legislating the need for such focused areas within schools.