No one discusses one of the great challenges to public schools: over-the-counter admissions. Public schools must accept students at any time during the school year. Students from other countries often arrive without records, making class placement difficult. Teachers struggle to bring these students up to date with class work.

I had as much as a 75 percent student turnover in my classes when I taught high school English. I assume charter schools don’t have to deal with this.

Estelle Tsantes, retired