I didn't opt out. If anything my sons have exceeded in their writing skills anything that I would have imagined before the state began testing. Here's what's at stake in my home...
"Massachusetts Comprehensive Assessment System
John and Abigail Adams Scholarship
The John and Abigail Adams Scholarship provides a tuition waiver for up to eight semesters of undergraduate education at a Massachusetts state college or university. The scholarship covers tuition only; fees and room and board are not included.The scholarship must be used within six years of a student's high school graduation."
http://www.doe.mass.edu/mcas/adams.html