A new icon in the school dashboard would signify less than 95 percent participation.
Current method doesn't credit progress by lowest and highest performing students.
State board considers other measures of student engagement and achievement.
Officials say it will avoid confusion; critics say the data should be accessible.
About 5,000 California seniors were eligible to take the test this summer.
Company pledges more training, better pay for teachers scoring online tests.
Hiring teachers to score new Common Core tests is a priority.
State Board of Education gives preview of format for Smarter Balanced scores