Specifications include, but are not limited to: The Irving Independent School District is seeking qualified firms interested in contracting with the District to provide various special education services as identified below. The award will be for a one (I) year period with an option to renew for four additional 12 month periods, for a maximum of five (5) years. These services shall be purchased on an "AS NEEDED" basis. with Irving ISD making the sole determination of need. Multiple vendor awards are anticipated to provide the district with a variety of resources for needed services. Al I suppliers agree to provide service as required within the time limitations designated by the Irving ISO (upon receipt of a llSD Purchase Order