Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE GRADECONVERSION ( gradepoint INTEGER, lettergrade VARCHAR )
TABLE: CREATE TABLE ENROLLED_IN ( Grade VARCHAR, StuID VARCHAR )
TABLE: CREATE TABLE STUDENT ( city_code VARCHAR, StuID VARCHAR )

### Question ###
What is the maximum and minimum grade point of students who live in NYC?

### Accurate SQL ###

SELECT MAX(T2.gradepoint), MIN(T2.gradepoint) FROM ENROLLED_IN AS T1 JOIN GRADECONVERSION AS T2 JOIN STUDENT AS T3 ON T1.Grade = T2.lettergrade AND T1.StuID = T3.StuID WHERE T3.city_code = "NYC"