Brutalism in Europe
Brutalism is a style of architecture that heavily features sharp geometric shapes and an overall blocky aesthetic. Buildings like this also tend to be made using large quantities of poured concrete. Examples of Brutalism can be found in most modern cities. This is because, after the Second World War, Europe was in the midst of a steel crisis. So, producing buildings heavily featuring concrete was the logical choice. There are many schools in Europe that were actually created using this style.
Here is a link to an article that lists a few of these schools from Arch Daily: