PA EITC tax credit information can be obtained on the state website at:
http://www.newpa.com/find-and-apply-for-funding/funding-and-program-finder/educational-improvement-tax-credit-program-eitc
If you scroll down there is a PDF list of every school and charity eligible for donation including contact information. This list is complete for the 2014/2015 cycle but every organization must reapply beginning May 1, 2015.
New eligible donors may want to start with the less popular PA Opportunity Scholarship tax credit program as tax credit awards should be available on July 1,2015. Last cycle all applicants for this credit were awarded on July 1, 2014.
PA Opportunity Scholarship tax credit information can be obtained at:
http://www.newpa.com/find-and-apply-for-funding/funding-and-program-finder/opportunity-scholarship-tax-credit-program
Eligible schools and eligible recipients can be viewed here:
http://www.portal.state.pa.us/portal/server.pt/community/school_services_office/9153/p/1202312