You are grading too much. In a 25x classroom, formative assessments (practice) should be auto-graded by the software. You should only grade summative assessments (final projects) personally.
: Most titles are lightweight, ensuring they don't lag on school Wi-Fi. classroom 25x
It is the shift from (discipline and crowd control) to Amplifying (data-driven instruction and personalized pathways). You are grading too much