Irish school system fails 75% of People. Why?

Why does the school system work for so few people? Since the beginning in setting up The Homework Club there was a clear pattern. One third of the students were drawn to us by having a recognised learning difficulty such as my own dyslexia, another third had an un-diagnosed condition such as specific comprehension difficulties which are not easily seen and the last third were made up of all the auditory and kinaesthetic learners who just couldn’t fit in or relate to the school material! They are always seen as the disruptive chatter boxes and great on the sports field and not academic.