Horwath says schools are the heart of our communities and could be better used to provide affordable programs for kids, parents and seniors.
Campaigning in Brampton today, Horwath said 28 per cent of the groups that rent school space after hours had to cancel or reduce their programs between 2008 and 2012 because of rising fees.
She said the NDP's 'open schools' fund would help school boards keep those fees low and allow them to keep the buildings open and accessible for more hours each day.
Horwath said if the NDP wins the June 12 election, she would also provide funding to help schools make renovations.
She blamed broken Liberal funding promises for forcing school boards to jack up the fees, and said the Progressive Conservatives have no plans to support the community use of schools.