HARRISBURG — Republican leaders in the Pennsylvania House took the wraps off a state budget proposal today that would spend about $100 million less than the governor has proposed but about $600 million more than what passed nearly a year ago.

The GOP leadership touted an increase in spending on K-12 education, funding to hire 300 more state troopers and greater support for certain health programs, county conservation districts and the state open records office.

The House is expected to take up amendments to the $28.3 billion bill during the second week in June, with the goal of enacting the spending plan before the state’s new fiscal year starts on July 1.

State lawmakers also are considering three major issues — changes to public sector pensions, liquor system privatization and a transportation package — that could require changes to the budget.

“By no means am I presenting this budget to you today as if this is a final budget,” said Appropriations Chairman Bill Adolph, R-Delaware. “Negotiations on many of these issues are ongoing.”

Jay Pagni, spokesman for Gov. Tom Corbett’s budget office, called the proposal “a starting point,” noting it takes into account lagging tax collections since the administration laid out its own budget in February.

Where the Republican governor has sought pension changes that would free up some money in next year’s budget, the House Republicans said lower-than-projected payments into the teachers’ pension fund had produced a savings of about $140 million instead.

Both Corbett and the House Republicans produced budgets that assume the state will not expand Medicaid under the federal Affordable Care Act, although the governor has said that decision could change.

Revenues from liquor system privatization, if it passes, will not come in for at least a year, said House Majority Leader Mike Turzai, R-Allegheny, so it would not affect the 2013-14 state budget.