The OPMA statute generally requires that votes by public bodies occur in open session. However, the below article points out that tenure charges is an exception created by a conflicting statute, the Tenure Employees Hearing Law (N.J.S.A. 18A-6-11).

Paterson Times
Paterson school board’s closed session vote to file tenure charges did not break open meetings law
by Jayed Rahman
April 6, 2017