tell me the average roll for pirinoa school.
CREATE TABLE table_name_83 (roll INTEGER, name VARCHAR)
SELECT AVG(roll) FROM table_name_83 WHERE name = "pirinoa school"
### Context: CREATE TABLE table_name_83 (roll INTEGER, name VARCHAR) ### Question: tell me the average roll for pirinoa school. ### Answer: SELECT AVG(roll) FROM table_name_83 WHERE name = "pirinoa school"