Complex sentence: This initiative was not universally successful due to financial restrictions but it did result in some grammar schools being created however, it may also have been founded prior to this date as there were also cases of existing schools being turned into reformed grammar schools by this initiative.
Split into simpler sentences: This initiative was not universally successful due to financial restrictions but it did result in some grammar schools being created. However, the Grammar School may even have been created prior to this date as there were also cases of existing schools being turned into reformed grammar schools by this initiative.