Hello,

Changing things myself seems too complicated for me so far, therefore I drop notes.... Sorry for that. With the time I will try to learn how to do it myself.

    There are potentially 3 school buildings here
    https://www.openstreetmap.org/way/228788112
    https://www.openstreetmap.org/way/228788073
    https://www.openstreetmap.org/way/228788070


Yes, these three buildings make up Heilige Familie.

The other two buildings to the North-West are Champagnat.

The adjacent buildings to the South-East are Helmetje, run by the same people as Heilige Familie.

Both Primary schools share the same entry door, even if the official address of Champagnat is in Rue Richard vandevelde, but as its narrow and not PMR-accessible, they do not use it for the pupils.

Most of the ground both schools and the child-care-facility share has the same owner, a religous order. At a time, Heilige Familie had a primary and a secondary school. The latter was closed and when Dutch-language Champagnat was forced to leave the buildings of French-language Champagnat Square Riga they were invited to use the then empty former secondary school buildings.

Therefore you have two catholic Dutch-language primary schools using the same entry and partitioning the ground....

Ok so?
