Petro Erasmus completed a BA Ed degree in School Guidance and Counselling at the University of Pretoria (1985)(Pretoria), which was followed by a Diploma in Special Education (UNISA) in 1994 and the BEd Honors degree in Educational Management in 1990 at UNISA She then completed her Masters Degree in Guidance and Counselling (2003) at the University of Pretoria (cum laude) as well as a Masters Degree in School Guidance and Counselling (2006)(Unisa). In 2013 she completed her PhD (Educational Psychology) in 2013. She is registered as an Educational Psychologist with the HPCSA (PS0099821)
She has had a private practice in Mafikeng (Child, Family Guidance and Development Centre) since 2007 and a Remedial Centre since 1992. She works extensively in the Mafikeng community.
Her research neurodevelopmental disorders (Autism, ADHD, Dyslexia, and Developmental Dyscalculia) with a specific focus on BRAIN AWARENESS. She is also a member of SEPSA (Society for Educational Psychologists—Division of PSYSSA). She is also on the editorial board of the Journal for Career Construction.
She is the creator of WHARTELSTM, an educational series of products that includes a board game, Puppets, maths apparatus, storybook, and PENPlay app.