Single-sex education in Spain has frequently been criticized by certain political groups or ideological sectors. In some cases, the ignorance of current reality causes that these criticisms are based on the school of the early twentieth century, in which boys and girls were separated and taught according to the roles that society assigned to each sex. In other cases, the criticisms are based on ideological prejudices that associate this type of schools with the Catholic religion and that seek to take this subject out of the schools and return it to the family or private sphere. Finally, there are also those who call these schools "elitist" because they consider that they are aimed at a profile of families with high purchasing power, a fact that is clearly denied if data are taken into account.

For all these reasons, different political parties defend the fact that these schools do not have to be eligible for public funding, since according to them they are schools that "discriminate" or "segregate", very pejorative terms that they can not be sustained in a modern and advanced society like ours. The Constitutional Court, in the text reproduced below, has recently pronounced on these demands in terms of approving the constitutionality of these schools and, therefore, the full rights of the families that choose them to be able to benefit from public funding, as long as the law is complied with.

Tribunal Constitucional