For 8th to 2nd Kyu, the grading exams are the responsibility of local dojos. Since i dont practice in a dojo because there are none teaching iaido in my country, i will have to go abroad for grading ( See thread "Would you help me, please" in the Iaido section for more info) Though the Kyu grading requirements may vary slightly from dojo to dojo, i suppose the main requirements are basically the same.

Can anyone tell me wat are the requirements for each kyu?
Is it possible to skip a Kyu and attempt a higher one?
Is it possible to attempt several kyus during the same examination day?
Is it theoretically possible for someone to attempt ikkyu without going through kyus at all, as far as rules and regulations are concerned?

Thanks.