After the province legislated teachers contracts with a two-year wage freeze in 2012, public school teachers withdrew from extracurricular activities.

When Kathleen Wynne became premier early last year, she agreed to reopen negotiations with the Elementary Teachers Federation and Ontario Secondary School Teachers Federation.

The Progressive Conservatives asked the auditor general to examine the decision.

Now, Bonnie Lysyk reports the renegotiated deals cost another $468-million.

The auditor general says changes to sick leave, retirement benefits and additional professional development days and increased maternity leave cost $355-million.

Add another $113-million to eliminate wage differences between teachers’ unions.

But Lysyk says the Liberals were right in assuming the contracts, which reduced teachers ability to bank sick days and cash them out at retirement, would result in savings of about $2.1-billion.