As many as 125 students were implicated in the exam-cheating scandal when the university addressed the issue last year.
The inquiry started after a teaching assistant detected problems, including that students may have shared answers.
School officials say the spring course involved included undergraduate students at all class levels.
In an email sent across the campus Friday, a Harvard dean spoke about how the school's academic integrity board resolved cases related to the cheating probe.
He said "somewhat more than half" the cases involved students who were forced to withdraw from the college for a period of time. Of remaining cases, half the students got disciplinary probation. The rest weren't disciplined.
Some athletes became ensnared, including two basketball players who were scratched from the roster.