Rachel Monahan of the N.Y. Daily News reports: While Mayor Bloomberg has touted gains for the poorest students, middle-income kids' test scores have failed to improve during his administration.

Eighth-grade reading scores for this group dropped dramatically compared to their peers in other large cities between 2003 and 2011.

Middle-income students' average test scores in fourth-grade reading and in fourth- and eighth-grade math showed no significant gains, even while nationwide scores trended up.

Read Rachel Monahan's story in the Daily News.