LANSING, Mich. — Gov. Rick Snyder this week will propose spending roughly 3 percent more on K-12 public education next school year, a step he said would increase state-based funding of schools by more than $1 billion since he took office three years ago.

The governor told the Associated Press that his planned school aid budget would include an average $100 increase in Michigan’s per-pupil grant, with the lowest-funded districts receiving $111 more and better-funded districts getting an extra $83. The state also will continue covering more retirement costs instead of including the money in districts’ traditional per-student aid.