Some Portuguese employers and families are of the opinion that the existence of private education institutions, where accessibility is based primarily on ability to pay, is not as fair as the public system and could gloom the meritocracy concept, leading to easier entrance criteria and lower teaching standards. Some private institutions are known for making it easy for students to enter and also to get higher grades - as long as they pay. Others claim that the private systems could prevent a significant portion of Portugal's population from being able to attend these schools that is also unfair. The quotas imposed on public education institutions to create room for students from former Portuguese colonies, who get automatically a place in those institutions also creates a big problem in terms of fairness, as some of these students can enter with very low grades excluding a portion of the Portuguese born students from studying in the public institutions and first choice courses they want.