Commands

node magister.mjs students                       # list students (works for parent and child credentials)
node magister.mjs schedule <id> <from> <to>      # schedule, YYYY-MM-DD dates
node magister.mjs grades <aanmelding_id> [top]   # grades (default top=50)
node magister.mjs infractions <id> <from> <to>   # absences

Flow

Run students first to get each student's id and aanmelding_id. Use id for schedule and infractions, aanmelding_id for grades.