Since 2014, the District of Columbia has used an annual common application to place new students from prekindergarten for 3-year-olds (PK3) through 12th grade in DC Public Schools (DCPS) and DC public charter schools. Though K-12 students have the right to attend their in-boundary school, this policy does not extend to students in PK3 or PK4 (prekindergarten for 4-year-olds). Instead, prekindergarten students apply through a common lottery for a spot at one of the District's public school options. In the first comprehensive description of DC public prekindergarten applicants and application patterns, we demonstrate that PK3 and PK4 lotteries differ substantially, both in families' application choices and in outcomes. We find that applicants and matched applicants closely resemble their respective populations of 3- and 4-year-old children in DC, but wait-listed applicants disproportionately represent socioeconomically advantaged 3- and 4-year-old children in DC, as well as families in immigrant communities.