Per Scholas Philadelphia EditDeleteReturn to The PSSE Membership Directory First Name Kellyn Last Name Williams Organization Name Per Scholas Philadelphia Title Senior Manager, Admissions Listing Category Other. Please specify: Address 3675 Market St. City Philadelphia ZIP Code 19104 Website https://perscholas.org/locations/philadelphia/ STEM Ecosystems Philadelphia STEM Ecosystem Contact listing ownerSend MessagePlease log in to be able to send messages to the listing owner.