In addition to private schools outside the contract and homework assistance associations, underground schools have been developing for several years, sometimes against a backdrop of political Islam.
Pointed out by Gerald Darmanin on Wednesday, one of them closed last week for health reasons in Sevran, in Seine-Saint-Denis.
We knew the private schools without contract, which concern about 80,000 students, with ten establishments under state supervision and four closed since January.
There are also associations of aid to duty, which sometimes hide teachings tinged with political Islam.
A new phenomenon has appeared in recent years: that of underground schools, associations which claim to teach.
One of the two officially known cases was mentioned on Wednesday by Gérald Darmanin, the Minister of the Interior, who defends his future law on separatism.
About 70 students welcomed
Alerted by the comings and goings of parents in front of old hangars near the city's shopping center, the mayor of Sevran, in Seine-Saint-Denis, reported the fake school to the prefecture a year ago.
Indeed, the Amana association welcomes a little more than 70 students, while most of them are officially declared in home education by their parents.
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The second problem is that the school is not declared as such by the National Education.
However, on a website that lists Muslim schools, the association presents itself as a private school providing kindergarten and primary education.
One of the pupils' parents, contacted by Europe 1, defends an association to help with homework, with manual Montessori-type activities, educational outings and foreign language courses.
Reinforced inspections?
But the prefecture has conducted its investigation and Minister Gerald Darmanin speaks of "indoctrination" of children, implied against a background of political Islam.
The underground school was finally closed last Thursday but for health reasons, the only reason currently provided for by law, because the premises do not meet safety standards.
Children were welcomed next to sanitary products and there was no fireproof door, for example.
It is impossible to invoke reasons for the content of the lessons because, for the National Education, this school does not exist.
She can simply do home inspections of children to assess their level.
The future law prepared by Gérald Darmanin allows, according to its promoters, to acquire tools to counter these associations in substance, which are developing in parallel on the internet.