Last month, D.C. Schools Chancellor Michelle Rhee drew some heat for not renewing the contracts of 24 principals, including the principal of Oyster Adams Bilingual Elementary, where her daughters attend. This afternoon, she continued her crack down on administrators, firing 22 assistant principals, who like principals, work on year to year contracts. No specific reasons have been given for the terminations, which is consistent with DCPS's policy of not disclosing personnel details. DCPS spokesperson Mafara......