Here you go @annswin and @castillodavidca some better thinking and data on this topic of enrollment which is and has always been the issue.
In 1970 OUSD has 63,000 students and today it serves about 36,000. In 1970 it had about 90 schools and today it has about 86.
Madison has long spent more than most, now nearly $20,000 per student, despite long standing, disastrous reading results.