Brookfield's School Superintendent is proposing a budget for the coming year which is 4.4 percent more than the current spending plan.  The increase includes four new full-time teachers, including one to teach a new class in sign language.  The budget is proposed at $44.6 million.  Most of the hike is due to contractual salary and benefit obligations, which are 3-percent more than the current year.  Initiatives proposed but cut last year, are back in the plan.  They include a mobile world language lab at the middle school and a study of school start times.  The Board of Ed plans to send a proposal to the First Selectman by the end of next month so the Selectmen and Board of Finance can make recommendations.