You should have testing done by a qualified professional (a psychologist might be a good place to start). There can be other diagnoses that would cause these symptoms as well. You might also speak with your school guidance department to see what resources are available there. Please don't be afraid to go to them as this is part of their job to guide you in the right direction and they will probably be glad to help. Good Luck to you!! You have made a first step with your apparent insight!
Try the Australian Bush Flower Essences Cognis 7 drops in 16 oz of water, shake and sip while needing to concentrate and wanting to retain better, can also be used for better recall. For the other problems you might want to take 7 drops of ABFE Adol essence morning and night and leave 20 minutes between the Cognis.
"Australian Bush Flower Healing" by Ian White
ISBN-10: 073380
Yahoo email group discussing Australian Bush Flower Essences
http://health.groups.yahoo.com/group/ABFEstudy/