The Howard County Board of Education discussed the following items at its July 26 meeting. For more information, call 992-0500.

EXTRA CLASSROOM SPACE -- The board voted 5 to 0 to transfer $150,000 in unused contingency funds allocated for the construction of Waverly Elementary School to pay for the installation of four temporary classrooms at two elementary schools.

Waverly school, north of Ellicott City, is nearly completed and has unused construction funds, according to Bill Brown, director of school construction and planning.

The additional units will help accommodate record elementary school enrollment in the county, school officials said. Even with two new elementary schools opening this fall -- Waverly and Deep Run Elementary in Columbia -- September's projected kindergarten through fifth-grade enrollment of 15,123 students will be 674 over capacity.

In the fall, the county will rent or own a total of 35 temporary classrooms, at a cost of about $450,000 to the school system in fiscal 1991, Brown said.

Two of the 24-by-36-foot units are at Elkridge Elementary in southern Howard County, and the other two at Clarksville Elementary in the western part of the county. Each unit holds up to 30 students.

The $150,000 will pay for foundations, electrical wiring, lighting and walkways around the new units and for maintenance work on other portable classrooms in the county, Brown said.

SCIENCE LAB ADDITION -- The board voted 5 to 0 to hire Murray and Associates, a Glen Echo, Md., architectural firm, to design a $2.1 million science lab addition at Oakland Mills High School in Columbia. School staff members say the addition is badly needed to replace the school's crowded, aging science labs.

The board endorsed a proposal submitted by the firm that calls for construction to begin in October and be completed by fall 1991. The firm's fee for its services will be $148,000, according to the proposal.