No person otherwise qualified shall be denied the right to receive credentials from the commission, to receive training for the purpose of becoming a teacher, or to engage in practice teaching in any school, on the grounds he or she is an individual with a disability; nor shall any school district refuse to engage a teacher on such grounds, provided, that the teacher, with reasonable accommodations, is able to carry out the duties of the position for which he or she applies in the school district. “Disability,” as used in this section, means (1) a physical or mental impairment that substantially limits one or more of the major life activities of the individual, (2) a record of such an impairment, or (3) being regarded as having such an impairment.