Why teaching admin grows faster than the teaching does
A teaching practice scales unevenly. Doubling from twenty to forty students roughly doubles the hours taught, which is expected and manageable. What is not expected is that the administration more than doubles, because the work is not per-student — it is per-exception, and exceptions grow with the number of relationships in the system.
With twenty students you can hold the exceptions in your head: the family that pays late, the child who moved to Thursdays, the boy who still has the spare clarinet. With forty you cannot, and the moment you cannot, everything becomes reconstruction — scrolling back through a calendar and a bank statement to work out what happened.
Software helps here not by automating teaching but by recording the exception at the moment it occurs. A cancellation marked on Tuesday is five seconds of work. The same cancellation reconstructed at the end of term is fifteen minutes and a disagreement with a parent.



