The Wantagh School District's $79.8 million budget passed by a vote of 1,486-487 on May 21.
Incumbent Board of Education Trustee Kera McLoughlin was returned with a total of 977 votes.
In the biggest surprise, incumbent Trustee and board President Peter Mountanos and challenger Laura Reich tied for the second open slot 927 votes each.
First-time candidate Tara Cassidy came in third, with 827 votes.
It was the first time a Nassau County board election resulted in a tie, according to election officials, who set a runoff vote for June 26.