You keep citing M98. Here is part of the FAQ that was peddled to the voters regarding that measure:
4.   How much will this cost?
	 We can bring these programs to scale in all school districts in Oregon with an investment of $800 per high school student per year on top of the approximately $11,000 per student per year that Oregon currently commits to K-12. That will amount to $294 million in 2017-19, compared to approximately $1.7 billion in new General Fund revenues and available lottery funds projected for that period.

5.   Is Measure 98 an unfunded mandate?
	Not at all. Districts are not required to participate, although we hope all do. For those that do participate, funding comes with the programs. Districts are under no obligation to commit or divert other funds to these programs beyond what is provided in new state funding.

You can see the entire FAQ by clicking the following link http://voteyesfor98.org/about/faq