Each year the schools hire about 16,000 people as substitute teachers for roughly $100 per day.
He said that when his class usually has substitute teachers, "it's the same old thing, day in, day out."
Fifty actors have been trained and licensed as substitute teachers.
And the same is true for those victims of unfortunate circumstances, otherwise known as substitute teachers.
"There are days when we have 20 to 30 classes that we cannot fill with substitute teachers."
On any given day in the United States, about 274,000 people report for work as substitute teachers.
As an alternative, many of these people are applying to be substitute teachers.
Two substitute teachers took over in her absence, increasing the sense of confusion as students came and went.
Kelly Services, the temporary employment agency, recently began a program to provide substitute teachers to school districts.
The 330 employees had been on strike for two weeks, forcing the 3,500-student district to make do with substitute teachers.
