Title Case, sentence case, all-caps or all-lower - in one click.
For the parts of student life that involve running numbers or hitting word limits: grade percentages, due dates, age gaps for group work, BMI for a health class, length checks against an assignment brief, and the formatting the rubric actually penalizes for. None of it leaves your device until you paste the answer in.
In the styles used for academic titles, articles, short prepositions and coordinating conjunctions are lowercased in the middle of a title, while the first and last words always keep their capital. Follow the style guide your department names rather than a general rule, since the word lists differ slightly.
Both appear in academic styles and they are not interchangeable: one capitalises the significant words, the other only the first word and proper nouns. The reference list is a separate case again, where article titles and journal names follow different rules.
You keep the capitalisation and punctuation the style guide requires for that element, even when the source prints it differently. That is why a reference to an article often does not match the headline on the page - copy the style, not the original casing.