In Castel San Pietro there were a total of 302 students (). The Ticino education system provides up to three years of non-mandatory kindergarten and in Castel San Pietro there were 42 children in kindergarten. The primary school program lasts for five years and includes both a standard school and a special school.
Castel San Pietro had 302 students.  The Ticino education system offers three years of optional kindergarten, with 42 children attending in Castel San Pietro. The primary school program is five years long and includes both regular and specialized schools.