CREATE TABLE instructors(
    teacher_id DECIMAL PRIMARY KEY, -- Unique ID for each Instructor
    name TEXT, -- Name of each teacher
    teacher_age DECIMAL -- Age of each teacher
);

CREATE TABLE classes(
    class_id DECIMAL PRIMARY KEY, -- Unique ID for each class
    teacher_id DECIMAL, -- ID of teacher who teaches the class
    level DECIMAL, -- Grade level of the class
    year DECIMAL, -- Year the class was taught
    grade DECIMAL, -- Scored average of the class
    class_subject TEXT -- Subject name of the class
);

-- instructors.teacher_id can be joined with classes.teacher_id