public void deleteQuiz() throws SQLException {
		for (Question q : questions) {
			statement.executeUpdate("DELETE FROM questions WHERE question_id = " + q.getQuestionID());
		}
		statement.executeUpdate("DELETE FROM quiz_history WHERE quiz_id = " + quizID);
		statement.executeUpdate("DELETE FROM challenges WHERE quiz_id = " + quizID);
		statement.executeUpdate("DELETE FROM quizzes WHERE id = " + quizID);
	}