Complex sentence: She attended St Theresa Kisubi for Primary School, then joined Kitante Hill Secondary School for both "O" and "A" levels before joining Makerere University Business School from where she later graduated with a bachelor's degree in International Business.
Split into simpler sentences: She attended St Theresa Kisubi for primary school, then joined Kitante Hill Secondary School for both "O" and "A" levels. She then attended the Makerere University Business School from where she graduated with a bachelor's degree in international business.