Cristiano Ronaldo did not receive an adequate education.
Ronaldo is accused of throwing a chair at one of his school instructors when he was 14 years old, for which he was expelled.
Simultaneously, Ronaldo has loved football since he was a child and aspired to make a career out of it, so he dropped out of school in the middle of his studies.
Ronaldo's family supported him in his decision to drop out of school.