–  Normally, 39 lectures and 4 one-day trips each semester

     –  flexible attendance – attend any or all lectures for one low price

     –  no tests or other academic requirements for members

     –  volunteer speakers with the requisite knowledge and experience

     –  a wide variety of topics each semester

     –  excellent lecture facilities at Wilson College

     –  a staff of unpaid professionals who manage the IRP program

     –  an outstanding reputation for providing affordable continuing informal education