分别写。
对老师的,让宝宝口述,落款宝宝的名字,你发给老师。
给她的直接的上级,就说老师did a great job, and your kid loved her teaching.
每次上过她的课your kid always raved about it at home. You wanted to let them
know that she is an excellent teacher and great with kids.
上级的上级就不必了吧。或者在给上级的email里cc.