STAMFORD — A proposal to bring in private special education staff to teach two classes in Stamford schools left the teacher union president “insulted,” “disgusted” and threatening to file a complaint against the district, but that had little impact on the Board of Education’s approval Tuesday night.

After a brief discussion during a virtual meeting, all nine members of the Board of Education voted in favor of entering an agreement with Hubbard Day School that would allow the special education provider to teach two classes of students with autism, one at Springdale Elementary School and another at Northeast Elementary School.

The contract is for one year and the district has the option of terminating it at any time. It comes with a price tag of $850,000 that will be taken out of the special education operating budget in order to pay for the outsourced teachers and para-educators who will teach those classes, which will cater to 16 total students, or eight in each classroom.