On average in OECD countries, private sources account for a significant share of investment in tertiary educational institutions. Private expenditure on tertiary educational institutions increased faster than public expenditure between 2010 and 2016 on average across OECD countries, although this varies from country to country. Participation in tertiary education is not correlated to the funding model in tertiary institutions and high levels of private expenditure at tertiary education are not necessarily associated with lower enrolment. Financial support mechanisms in the form of grants or loans help alleviate the financial burden to households, particularly in countries where private spending on tertiary education is high.