The SCDS uniform dress code was developed to avoid preoccupation with fashion. The purposes of the school day are centered on learning. Uniforms are a visible display of agreement with these purposes.

Lands' End is the recommended SCDS uniform source. Uniform catalogs are available in the school office. Lands' End will embroider the SCDS logo onto items for an additional fee. Country Day Parents also offers used uniforms for sale. The average family spends between $200 and $300 per year per student on school uniforms.