In budget battles last year, the education "trailer bill" was released just a few hours before lawmakers voted on it, and included a controversial provision barring teacher layoffs.
Dennis Meyers with the California School Boards Association says he's hoping that doesn't happen again this year.
Meyers: "It's always a concern that in a year when there may be huge cuts coming that the legislature would decide how to limit how we implement those cuts."
School districts are trying to plan for more than five billion dollars in possible mid-year trigger cuts.
Dean Vogel is with the California Teachers Association.
Vogel: "Just about everything happens at the last minute, that's the nature of the final hours of the budget deal we would always like to be in the middle of that, sometimes we are, sometimes we're not"
Funding for up to three weeks of school could disappear if voters reject Governor Jerry Brown's proposed tax initiative in November.