In CPS, `tiers´ are supposed to even the playing field for school admissions. But hundreds of students were placed in the wrong tier.
(Chicago Tribune Religion News)

Hundreds of Chicago Public Schools families could have made important decisions about their children´s education using information provided by CPS that turned out to be wrong. Nearly 1,000 students were miscategorized in CPS´ `tier` system, which helps determine who gets admitted into which selective...