My son has facial blindness and despite being tested for dyslexia (privately) we didnt know until he worked it out as an adult. He had a very difficult time at school as the moved classes for each subject, but he would not recognise the teacher or any of his 'friends' and did not know if the kids where friends or the school bullies! He was often in trouble for mischief in class when the teacher stepped out or had not arrived as he could not 'read' the room and was always the last to look busy when the teachers hand pushed the door. So it can also spread into reading body language and situations too. He discovered it when a friend stopped him on the high-street and asked why he was ignoring him! I asked him how he knew who i was when i collected him from school, he said that I was always late and always wore wellingtons! So if you have anyone in your family with bright kids struggling at school, please offer this as a possibility, it could make these childrens time at school and education so much easier.
Thanks for reading, Pat