Reference letter

Could you please say whether the following reference letter is grammatical?

Thank you in advance.

Dear Admission Officers,

As an Associate Professor and the Deputy Director of English Department of Hainan University, I deem it an honor to recommend Miao Yihan to your university.
I taughr her the course of An Introduction to Modern English Lexicology from Sep. 2016 to Dec. 2016, which included the study of English lexicology, morphological structure of words, word formation, semantics and context etc. This course required students be able to understand the basic theoretical knowledge of English vocabulary, learn the knowledge to think, analyze and solve problems independently. Under the guidance of the teacher, students also needed to complete the reading of vocabulary books, and made personal evaluation on the ideas of the contents. She did a very good job and got 87 scores out of 100 at the final examination.