Giuliana De Frenza received her Montessori Training from Scuola Magistrade Livio Andronico, Taranto, Italy where she received her diploma in 1957.
She received further training in the Montessori method and administration after she arrived in California.
After teaching for many years in various Montessori schools in California, she opened Montessori Harbor Mesa school in 1970 where she has been a teacher and now is the Principal.