Complex sentence: These "tableaux vivants" were often performed as the basis for school nativity plays in England during the Victorian period; the custom is still practiced at Loughborough High School (believed to be one of England's oldest grammar schools for girls).
Split into simpler sentences: These "tableaux vivants" were often performed as the basis for school nativity plays in England during the Victorian period. Today, the custom is still practiced at Loughborough High School (believed to be one of England's oldest grammar schools for girls).