Existing data
Grades
Assessment scores (especially if they are frequent, such as weekly comprehension checks)
You can work with other teachers to track this together if there are concerns in multiple settings - just be sure to note what class you are reporting/what assessment it is
Work completion (calculate a % of graded assignments turned in, number of missing assignments, or % of in-class work completed)
Can also be completed in collaboration with the student's other teachers
Recommended to calculate once a week
Discipline referrals: should already exist in records, continue to be documented using current system.
Attendance: available in eschool