Roxie,

A qualified individual with a disability is defined under ADA as someone who can perform the essential duties of the job, with or without reasonable accommodation. Disability is defined as a physical or mental impairment that substantially limits one or more major life activities. While the ADA lists some categories of impairments, it does not list diseases or illnesses. Each disability is handled case by case.

The definition of disability would seem to work in your favor, as long as there is a documented history. However, you can't use the ADA to limit the amount of days or time you work. The first part of the definition means that you need to be able to meet all job obligations listed for your particular job.

If there is some way that accommodations would help you perform your work full-time, then you may very well have legal standing. Otherwise, you would need to pursue other disability options, as apply in your school district, locality, state and so forth.

Based on what you say so far, it seems you are doing the right thing by trying to work with your principal and forge a solution that would allow you to work less than full-time. I know others here have been in the same situation and perhaps have advice to offer. I know that this is can a sensitive area about which to post. You really do need to be careful in what you divulge, but on the other hand, the more you can say, then the more suggestions you will get.

rafi