classes:  lecturer. enthusiasm, quite easy to calculate in reporting the lab, can leave many labs to the end of the reporting period once.  curriculum. enthusiasm, quite easy to calculate in reporting the lab, can leave many labs to the end of the reporting period once.  facility. enthusiasm, quite easy to calculate in reporting the lab, can leave many labs to the end of the reporting period once.  general. enthusiasm, quite easy to calculate in reporting the lab, can leave many labs to the end of the reporting period once.