Normalization first Take

First normal form:

There should be no repeated fields, and no arrays. All the entries in an attribute should be of the same kind. Break out any repetitions, give everything a key

2nd Normal form:

You should remove all functional dependencies: (Sub Themes, groups of attributes that relate to each other but not to the topic (key) of the entity

3rd Normal form

Is about removing transient dependencies--attributes that modify or describe another attribute and not the key

Here is the student entity not normalized

Here is the student ERD after normalization