Katrease Stafford and Tresa Baldas

In its latest crackdown on school corruption here, the federal government Tuesday dropped a legal bomb on 12 current and former principals, one administrator and a vendor — all charged with running a nearly $1 million bribery and kickback scheme involving school supplies that rarely were delivered.

Among those charged: Ronald Alexander, principal at Charles L. Spain Elementary-Middle School that’s scheduled to receive more than $500,000 in donations from TV talk show host Ellen DeGeneres. Alexander’s charge, unrelated to DeGeneres’ announcement in February, is bribery for allegedly pocketing $23,000 money from Norman Shy in exchange for using the owner of Allstate Sales as a school-supply vendor, according to federal court records.