CREATE TABLE `ttm_overview` (
  `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `import_filename` varchar(256) DEFAULT NULL,
  `imported_at` datetime DEFAULT NULL,
  `student_id` int(11) DEFAULT NULL,
  `student` varchar(256) DEFAULT '',
  `placement_test_result` varchar(256) DEFAULT '',
  `lessons_attempted` varchar(256) DEFAULT '',
  `total_lessons_passed` varchar(256) DEFAULT '',
  `target_lesson_pass_rate` varchar(256) DEFAULT '',
  `precursor_lesson_pass_rate` varchar(256) DEFAULT '',
  `lessons_passed_by_pre_quiz` varchar(256) DEFAULT '',
  `pre_quiz_avg` varchar(256) DEFAULT '',
  `post_quiz_avg` varchar(256) DEFAULT '',
  `problems_attempted` varchar(256) DEFAULT '',
  `earned_points` varchar(256) DEFAULT '',
  `learning_coach_helps` varchar(256) DEFAULT '',
  `live_helps` varchar(256) DEFAULT '',
  `total_math_time` varchar(256) DEFAULT '',
  `school_time` varchar(256) DEFAULT '',
  `evening_weekend_time` varchar(256) DEFAULT '',
  `created_at` datetime NOT NULL,
  `updated_at` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `student_id` (`student_id`)
) ENGINE=InnoDB AUTO_INCREMENT=51 DEFAULT CHARSET=utf8;