Prince William County School Superintendent Edward L. Kelly proposed a $185.7 million operating budget yesterday for the next school year, a 14.63 percent increase over current spending.

The budget calls for a 7.5 percent raise for teachers and other staff, money for 157 new classroom positions and expansion of remedial reading programs while accommodating several new state requirements concerning such matters as pay and class size and a projected enrollment increase of 1,300 students. Prince William County, with 39,100 students, is the the state's fourth largest school district.

The budget includes no new academic programs, although Kelly has included in his six-year plan a seven-period high school day. That item, with a $3.3 million price, will be delayed for at least another year, Kelly said.

"That is the dilemma we face," said Kelly. "The difficulty you have with a growing system is that it takes so much money just to take care of increasing enrollments" that there is little left for improving the academic program.

The budget figure, which anticipates revenues of nearly $92 million from the county, was arrived at, Kelly said, after a series of meetings with County Executive Robert S. Noe and county budget officials.

Noe remarked that there was "more cooperation {with school officials} than ever before."

In previous years, school budget planners have made their proposals without guidance from county officials. Last year they had to make a $7.6 million cut to arrive at the ceiling approved by the Board of County Supervisors. Kelly said he hopes to avoid a similar outcome this year.

The 7.5 percent teacher raise was arrived at early this year after meetings with the Prince William Education Association, which represents 1,560 of the county's 2,450 teachers. Kelly said it would satisfy state mandates requiring the county to raise teacher pay 14.6 percent over the next two years or face cuts in state funding.

Under the new pay plan, the average Prince William teacher's salary would rise from $29,563 to $31,800, and the pay of beginning teachers from $21,000 to $22,500.

Kelly's budget also includes a $2 million reserve fund for maintenance emergencies and $51,875 to implement a pilot project that would give principals at five schools greater discretion in a variety of matters. Kelly proposes a 10-cent raise in the cost of school lunches.

The School Board will vote on Kelly's proposal March 16. The budget then goes to the supervisors, who plan public hearings late this month and in April.