Complex sentence: There were two main schools in the neighborhood, the Goethe Schule and the Pestalozzi Schule-around the Second World War there was a certain division of political and religious origin between the two schools.
Split into simpler sentences: There were two main schools in the neighborhood, the Goethe Schule and the Pestalozzi Schule. Around the Second World War there was a certain division of political and religious origin between the two schools.