首先,校长听课应该有选择。一所学校,少则几十人,多则几百人,校长很难做到全面地听每一位教师的课。即使能够做到,校长的听评课也应该是分类或者是有主题地听。校长可以选择新教师、青年教师、中 First of all, the principal should have a choice of lectures. A school, ranging from as few as dozens, as many as hundreds, principals difficult to fully listen to every teacher's class. Even if it can be done, the headmaster's audition class should also be categorized or themed listening. Principal can choose new teachers, young teachers, in