The grants, worth over $150k each, were given to Immanuel Lutheran College, Buderim, QLD, Our Lady of Mercy College, Parramatta, NSW, and St Mary's College, Adelaide, SA.
They will receive classroom sets of HP products including tablet, notebook and desktop PCs and All-in-One printers.
Teachers will also share ideas and best practices in online learning, virtual worlds and simulations to improve their skills and knowledge about effective technology integration in teaching and learning.
Peter Ekstedt, director of Global Citizenship, HP APJ said all three schools had shown a commitment to fostering innovation through the use of technology in teaching and learning.
"The successful proposals put forward serve as lighthouse examples of how technology-enabled schools, students and teachers can lead the way in transforming education in this country," he said.
Teachers will also receive professional development through HP's partnership with the International Society for Technology in Education.
"The HP Innovations In Education Program is about more than the donation of money and equipment," said Ekstedt.
"Our objective is to establish social investment programs in partnership with professional development organisations that make a genuine, significant and sustained contribution to learning outcomes for secondary schools and universities."
The three schools are amongst 28 schools and universities across Asia Pacific that have been granted a combined total of approximately $3.8m through the HP IIE Program.