Standard&Poor's Ratings Services assigned its 'AA' long-term rating to Oak Park, Ill.'s series 2015B general obligation (GO) corporate purpose bonds. At the same time, Standard&Poor's affirmed its 'AA' rating on the village's existing GO debt. The outlook is stable. The series 2015B GO bonds are secured by unlimited ad valorem property taxes. The village will use bond proceeds for capital improvements. The rating reflects our view of the village's: Very strong economy, with access to a broad and diverse metropolitan statistical area (MSA); Strong management, with "good" financial policies and practices under our financial management assessment (FMA) methodology; Adequate budgetary performance, with operating deficits in the general fund and at the total governmental fund level in