In the midst of a budget situation that led Pleasant Ridge School District to lay off eight teachers last week, the district’s teachers union is negotiating for pay raises and an increase to its health benefits. District officials say their proposal would cut in half an $800,000 deficit by proposing a 6 percent decrease to its certificated salary schedule, a removal of a retirement incentive and a perfect attendance stipend of $300. On the opposite side of the table, the president of the Pleasant Ridge Teachers Association says his union seeks a 5 percent increase in salaries, as well as …