The Prince George's County Board of Education has offered schoolteachers an across-the-board raise of $382 for next year, according to a report for the county teachers' union written after the second round of contract talks.

The offer amounts to a 2.7 percent increase for the lowest-paid teachers and less than 1.5 percent for the slight majority of teachers who make $25,000 or more.

It is considerably under the 5 percent cost-of-living increase that union President John C. Sisson sought for the county's 6,000 teachers, based on a 1.1 percent increment over the consumer price index of 3.9 percent for the 12 months through last November.

Other Board of Education proposals made at last Thursday's meeting between union and school officials would give school Superintendent Edward J. Feeney the power to freeze built-in salary increases for up to six months, if necessary, to avert teacher layoffs. More than 500 teachers were laid off this school year because of budgetary problems.

Union officials are not pleased with the recent proposal. "It's not going to fly," said one union official who asked not to be named. "I think teachers will be devastated by this. I haven't seen anything in there I can live with."

Sisson echoed the official's comments in the union report, titled "Negotiations Update," a copy of which was obtained by The Post. "Obviously we cannot agree to the Board of Education's proposals," Sisson wrote. Sisson called the board offer a starting point and added, "The association will continue to insist on improvements rather than rollbacks."

The report is being distributed to the teachers via the interschool mail system.

School officials could not be reached for comment on their proposals.

The school board also proposed eliminating reimbursement for tuition paid to teachers who go back to school for advanced degrees. Another board offer would eliminate the union's "sick leave bank" and reduce pregnancy leave from seven to six weeks. Currently union members allocate a proportion of their paid sick days to the sick leave bank and can borrow from the bank in cases of need. The board proposed a possible long-term disability plan to replace the sick leave bank.

"Eliminate the sick leave bank? Why should we?" asked the union official. "It's our leave."

Negotiations will resume next week, as do three public hearings on Feeney's proposed $317 million school budget.