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when I try to run my code the program keeps giving me syntax errors, but I can’t understand why
CREATE TABLE School (
ID INTEGER PRIMARY KEY NOT NULL,
Name TEXT NOT NULL,

);
CREATE TABLE events (
ID INTEGER PRIMARY KEY NOT NULL,
details TEXT NOT NULL,
start_data TEXT NOT NULL,
end_data TEXT NOT NULL,
title TEXT NOT NULL,
CONSTRAINT pk_School_ID REFERENCES School(ID)

);

CREATE TABLE CALENDAR (
ID INTEGER NOT NULL PRIMARY KEY,
title TEXT NOT NULL,
details TEXT NOT NULL,
start_data TEXT NOT NULL,
end_data TEXT NOT NULL,
subject INTEGER NOT NULL,
CONSTRAINT pk_School_ID REFERENCES School(ID)

);

CREATE TABLE GRADES (
ID INTEGER PRIMARY KEY NOT NULL,
title TEXT NOT NULL,
coefficent REAL NOT NULL,
value REAL NOT NULL,
date_time TEXT NOT NULL,
Subject INTEGER NOT NULL,
CONSTRAINT pk_School_ID REFERENCES School(ID)

);
””

can you please help me find the mistake thank

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