Can you help me define "tiers" please?

<p>“For example, say a student is well qualified statistics wise for a top tier school. However say this student wants to attend a school with fewer than 4000 students in an urban area but where she also has ample opportunites for outdoor recreation, community involvement and a very active Jewish community/Hillel.”</p>

<p>Historymom: please tell me what school you are referring to in this? It is EXACTLY what my D2 is looking for…having trouble tracking it down…</p>