In order to qualify for PAYE, you need to have borrowed your first federal student loan after October 1, 2007, and you need to have borrowed a Direct Loan or a Direct Consolidation Loan after October 1, 2011. (consumerfinance.gov)
Then, in 1958, the first federal student loans were offered under the NDEA. (studentloans.net)
To qualify for the PAYE program you need to have borrowed your first federal student loan after October 1 2007. (thecollegeinvestor.com)