[2][3] She attended Philadelphia High School for Girls and graduated in Mathematics from University of Pennsylvania in 1950.
[4] Following her first job interview with an insurance company, Koss, who was engaged at the time, was rejected for the reason that married women would have children and leave.
Her first big project was the development of what has become known as the 'Editing Generator', a sophisticated program to automatically format data for printing.
[5] Being able to create margins, headings and page numbers on the fly, Koss was the first programmer to attempt word processing.
After working for several other companies including Burroughs, Remington Rand, Philco and CDC, Koss moved to Harvard University where she stayed for 27 years until she retired in 1994, having been Associate Director of the Office for Information Technology and the University's Information Security Officer.